Properties of the Number 31145

Thirty-One Thousand One Hundred Forty-Five

Basics

Value: 31144 → 31145 → 31146

Parity: odd

Prime: No

Previous Prime: 31139

Next Prime: 31147

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 5 × 6229

Divisors: 1, 5, 6229, 31145

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100110101001

Octal: 74651

Duodecimal: 16035

Hexadecimal: 79a9

Square: 970011025

Square Root: 176.47946056127893

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

Numbers k such that 6·k+1, 6·k+7, 6·k+13, 6·k+19 are consecutive primes. A90839

Number of numbers x < 10ⁿ such that the digits of x² occur with an equal frequency of 2. A225428

Second elementary symmetric function of the first n terms of (1,2,2,3,3,4,4,5,5...). A203298

Numbers n such that n divides the (left) concatenation of all numbers <= n written in base 21 (most significant digit on right and removing all least significant zeros before concatenation). A29538

First row of spectral array W(log(π)). A249329

Duplicate of A090839. A296055

Factorials with a record number of zeros. A31145