Properties of the Number 31718

Thirty-One Thousand Seven Hundred Eighteen

Basics

Value: 31717 → 31718 → 31719

Parity: even

Prime: No

Previous Prime: 31699

Next Prime: 31721

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 15859

Divisors: 1, 2, 15859, 31718

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111101111100110

Octal: 75746

Duodecimal: 16432

Hexadecimal: 7be6

Square: 1006031524

Square Root: 178.0954800100216

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

The number of permutations p of {1,...,n} such that |p(i)-p(i+1)| is in {2,3,4,5} for all i from 1 to n-1. A174705

T(n,k)=Number of 2nX2k 0..2 arrays with values 0..2 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors. A198285

Solutions·to the negative Pell equation y² = 72·x² - 83232 with x,y >= 0. A281239

Number of 2n X 6 0..2 arrays with values 0..2 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors. A198280

Number of 2nX12 0..2 arrays with values 0..2 introduced in row major order and each element equal to exactly two horizontal and vertical neighbors. A198283

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 40. A31718