Properties of the Number 81307

Eighty-One Thousand Three Hundred Seven

Basics

Value: 81306 → 81307 → 81308

Parity: odd

Prime: Yes

Previous Prime: 81299

Next Prime: 81331

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 81307

Divisors: 1, 81307

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10011110110011011

Octal: 236633

Duodecimal: 3B077

Hexadecimal: 13d9b

Square: 6610828249

Square Root: 285.1438233593707

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

Primes of the form 47·n² - 1701·n + 10181. A128878

Primes p such that p⁶ - p⁵ + 1 and p⁶ - p⁵ - 1 are both primes. A243522

a(n) = (n+1)*τ(n) - σ(n). A81307