Properties of the Number 31173

Thirty-One Thousand One Hundred Seventy-Three

Basics

Value: 31172 → 31173 → 31174

Parity: odd

Prime: No

Previous Prime: 31159

Next Prime: 31177

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 10391

Divisors: 1, 3, 10391, 31173

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111100111000101

Octal: 74705

Duodecimal: 16059

Hexadecimal: 79c5

Square: 971755929

Square Root: 176.55877208453848

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

Primefree centuries (i.e., numbers k such that no prime exists between 100·k and 100·k+99). A181098

Number of inversion sequences of length n avoiding the consecutive pattern 100. A328441

T(n,k)=Number of length n+2 0..k arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero. A250561

Expansion of 1/sqrt(1-2·x-7·x²+8·x³). A98477

Number of (n+1) X 2 0..2 arrays with rows and columns in nondecreasing order and with no 2 X 2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one. A184073

Number of 0..n arrays x(0..3) of 4 elements with nondecreasing average value. A200764

Number of length 4+2 0..n arrays with the sum of second differences multiplied by some arrangement of +-1 equal to zero. A250563

Number of nX5 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero. A301881

Number of 7Xn 0..1 arrays with every element equal to 0, 1 or 3 horizontally or antidiagonally adjacent elements, with upper left element zero. A301890

Numbers k such that A176972(k) = 7^k + 7·k + 1 is prime. A370664