Properties of the Number 81316

Eighty-One Thousand Three Hundred Sixteen

Basics

Value: 81315 → 81316 → 81317

Parity: even

Prime: No

Previous Prime: 81307

Next Prime: 81331

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 29 × 701

Divisors: 1, 2, 4, 29, 58, 116, 701, 1402, 2804, 20329

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110110100100

Octal: 236644

Duodecimal: 3B084

Hexadecimal: 13da4

Square: 6612291856

Square Root: 285.1596044323249

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

Number of certain rooted planar maps. A305

Number of length-n binary words w such that ww is rich. A306314

Lexicographically earliest sequence of positive integers such that n occurs a(n)-1 times, starting at n=1. A81316