Properties of the Number 31310

Thirty-One Thousand Three Hundred Ten

Basics

Value: 31309 → 31310 → 31311

Parity: even

Prime: No

Previous Prime: 31307

Next Prime: 31319

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 31 × 101

Divisors: 1, 2, 5, 10, 31, 62, 101, 155, 202, 310

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 111101001001110

Octal: 75116

Duodecimal: 16152

Hexadecimal: 7a4e

Square: 980316100

Square Root: 176.9463195435271

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

Number of obtuse triangles, distinct up to congruence, on an n X n grid (or geoboard). A190022

Numbers n such that 203·2ⁿ-1 is prime. A50853

a(1) = 1; for n > 1, a(n) is the least k > a(n-1) such that a(n) + a(n-1) is square and a(n) - a(n-1) is prime. A108972

Write n in base 10, complement each digit and juxtapose. A31310

a(n) = (10·n + 4)⁵. A17321

a(n) = (10·n + 6)⁵. A17345

Number of (n+1)X4 0..3 arrays with every 2X2 subblock having the same number of equal edges, and new values 0..3 introduced in row major order. A205435

Irregular table read by rows: T(n,k) is the smallest m that has 2·n divisors and is at the beginning of a run of exactly k consecutive integers whose number of divisors increases by 2, or -1 if no such m exists. A363335