Properties of the Number 68131

Sixty-Eight Thousand One Hundred Thirty-One

Basics

Value: 68130 → 68131 → 68132

Parity: odd

Prime: No

Previous Prime: 68113

Next Prime: 68141

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 9733

Divisors: 1, 7, 9733, 68131

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10000101000100011

Octal: 205043

Duodecimal: 33517

Hexadecimal: 10a23

Square: 4641833161

Square Root: 261.01915638512054

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

Numbers that are the sum of seven fourth powers in exactly ten ways. A345832

Solution of the complementary equation a(n) = a(n-1) + a(n-2) + n·b(n-1), where a(0) = 1, a(1) = 2, b(0) = 3, b(1) = 4, and (a(n)) and (b(n)) are increasing complementary sequences. A296288

Expansion of 1/(1-2·x+x²+2·x³). A77942

Expansion of 1/(1+2·x+x²-2·x³). A77989

Number of factorizations of mⁿ into 3 factors, where m is a product of exactly 3 distinct primes and each factor is a product of n primes (counted with multiplicity). A257464

Number of sets of exactly n positive integers <= n+8 having a square element sum. A281971

Numbers k such that k and k² use only the digits 1, 3, 4, 6 and 8. A137026

Expansion of (E₄(q) - 28·E₄(q²) + 63·E₄(q³) - 36·E₄(q⁶)) / 240. A288485

Start with 1 and repeatedly reverse the digits and add 65 to get the next term. A118163

Triangular numbers with sum of digits = 21. A68131