Properties of the Number 31712

Thirty-One Thousand Seven Hundred Twelve

Basics

Value: 31711 → 31712 → 31713

Parity: even

Prime: No

Previous Prime: 31699

Next Prime: 31721

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ⁵ × 991

Divisors: 1, 2, 4, 8, 16, 32, 991, 1982, 3964, 7928

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101111100000

Octal: 75740

Duodecimal: 16428

Hexadecimal: 7be0

Square: 1005650944

Square Root: 178.07863431641653

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

Total number of n-digit numbers requiring 2 positive biquadrates in their representation as sum of biquadrates. A186650

a(n) = n³ - n² - n. A152015

Number of ways to place 2 nonattacking knights on an n X n cylindrical board. A172964

a(n) = ∑_{k=0..floor(n/3)} 2^k * binomial(2·k,2·n-6·k). A387763

Denominators of continued fraction convergents to sqrt(109). A41197

a(n) = 961·n - 1. A158412

a(n) = 2·n*3^n-1 - (3ⁿ-1)/2. A176177

Expansion of ∏_k>0 (1 + ∑_m>0 x^k·m!). A304332

Numerators of power series arising in random graphs. A141142

Number of 5-element nondividing subsets of {1, 2, ..., n}. A187492