Properties of the Number 31700

Thirty-One Thousand Seven Hundred

Basics

Value: 31699 → 31700 → 31701

Parity: even

Prime: No

Previous Prime: 31699

Next Prime: 31721

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2 ² × 5 ² × 317

Divisors: 1, 2, 4, 5, 10, 20, 25, 50, 100, 317

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101111010100

Octal: 75724

Duodecimal: 16418

Hexadecimal: 7bd4

Square: 1004890000

Square Root: 178.04493814764857

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

T(n,k)=Number of nXk 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A281034

Number of nX3 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A281029

Number of nX7 0..1 arrays with no element equal to more than three of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A281033

Numbers k such that Bernoulli number B_k has denominator 33330. A295589

a(n) = ceiling(10000·log₂(n)). A4270

Nearest integer to the space diagonal of the smallest (measured by the longest edge) primitive (gcd(a,b,c)=1) Euler bricks (a, b, c, sqrt(a² + b²), sqrt(b² + c²), sqrt(a² + c²) are integers). If the space diagonal is an integer then the Euler brick is called a "perfect cuboid". There are no known perfect cuboids. A141029

Consider all the Pythagorean triangles with perimeter A010814(n). Then a(n) is the sum of the areas of the squares on all of their sides. A334808

Primes from merging of 9 successive digits in decimal expansion of ζ(2) or (π²)/6. A105382

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 22. A31700

Primes from merging of 7 successive digits in decimal expansion of ζ(2) or (π²)/6. A105380