Properties of the Number 31022

Thirty-One Thousand Twenty-Two

Basics

Value: 31021 → 31022 → 31023

Parity: even

Prime: No

Previous Prime: 31019

Next Prime: 31033

Digit Sum: 8

Digital Root: 8

Palindrome: No

Factorization: 2 × 15511

Divisors: 1, 2, 15511, 31022

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 111100100101110

Octal: 74456

Duodecimal: 15B52

Hexadecimal: 792e

Square: 962364484

Square Root: 176.13063333787227

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

INVERTi transform of central trinomial coefficients (A002426). A7971

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9. A251652

Expansion of sqrt(1 - 2·x - 3·x²) in powers of x. A167022

Expansion of 2 - x - sqrt(1-2x-3x²). A168055

Expansion of 1 - x - sqrt(1 - 2·x - 3·x²) in powers of x. A126068

"Inside numbers". Pick a term "t" and one of its digits "d". Now jump to the right over d digits if "d" is odd, and to the left over d digits if "d" is even. Whatever the "d" you choose, you will stay on "t". A284515

Consider the graph with one central vertex connected to three outer vertices (a star graph). Then, a(n) is the minimum number of moves required to transfer a stack of n pegs from one outer vertex to another outer vertex, moving pegs to adjacent vertices, following the rules of the Towers of Hanoi. A291876

Expansion of x + sqrt(1-2x-3x²). A168058

Number of (n+2)X(3+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9. A251647

Number of (n+2)X(5+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 0 2 4 5 7 or 9. A251649