Properties of the Number 81130

Eighty-One Thousand One Hundred Thirty

Basics

Value: 81129 → 81130 → 81131

Parity: even

Prime: No

Previous Prime: 81119

Next Prime: 81131

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 × 5 × 7 × 19 × 61

Divisors: 1, 2, 5, 7, 10, 14, 19, 35, 38, 61

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011110011101010

Octal: 236352

Duodecimal: 3AB4A

Hexadecimal: 13cea

Square: 6582076900

Square Root: 284.8332845718702

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 multisets of nonempty strict integer partitions with a total of n parts and total sum of 2n. A360784

Pisot sequence T(7,10), a(n) = floor(a(n-1)²/a(n-2)). A20752

a(n) = n*(n-1)*(n-2)*(3·n-2)/6. A96200

Square array of binomial transforms of (0,0,1,0,0,0,...), read by antidiagonals. A81130