Properties of the Number 81331

Eighty-One Thousand Three Hundred Thirty-One

Basics

Value: 81330 → 81331 → 81332

Parity: odd

Prime: Yes

Previous Prime: 81307

Next Prime: 81343

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 81331

Divisors: 1, 81331

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110110110011

Octal: 236663

Duodecimal: 3B097

Hexadecimal: 13db3

Square: 6614731561

Square Root: 285.18590427999766

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 with 12 as smallest positive primitive root. A61325

Smallest prime p which is a concatenation of n³ and the cubic digits 0, 1, 8. A174979

Primes p whose smallest positive primitive root (mod p) is not squarefree. A205581

Natural numbers n such that the concatenation n//1331 is a prime number. A174213

Number of numbers <= n that can be written as sum of two 3-smooth numbers. A81331

Natural numbers n such that the concatenation n³//1331, i.e., a cube and 11³, is a prime number. A174229

Prime numbers p such that the concatenation p³//1331 is a prime number. A174409