Properties of the Number 81319

Eighty-One Thousand Three Hundred Nineteen

Basics

Value: 81318 → 81319 → 81320

Parity: odd

Prime: No

Previous Prime: 81307

Next Prime: 81331

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 7 × 11617

Divisors: 1, 7, 11617, 81319

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110110100111

Octal: 236647

Duodecimal: 3B087

Hexadecimal: 13da7

Square: 6612779761

Square Root: 285.16486459590357

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

Partial sums of A299268. A299269

Numbers n such that 3⁹*2ⁿ - 1 is prime. A231374

Smallest squarefree integer k such that Q(sqrt(-k)) has class number n, or 0 if no such k exists. A81319