Properties of the Number 31286

Thirty-One Thousand Two Hundred Eighty-Six

Basics

Value: 31285 → 31286 → 31287

Parity: even

Prime: No

Previous Prime: 31277

Next Prime: 31307

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 × 15643

Divisors: 1, 2, 15643, 31286

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111101000110110

Octal: 75066

Duodecimal: 16132

Hexadecimal: 7a36

Square: 978813796

Square Root: 176.87848936487444

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

Ceiling of γ(n+10/11)/γ(10/11). A20095

Number of nX5 0..1 arrays with every element unequal to 0, 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero. A304541

Additive persistence: number of summations of digits needed to obtain a single digit (the additive digital root). A31286

T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 3, 4 or 6 king-move adjacent elements, with upper left element zero. A304544