Properties of the Number 31890

Thirty-One Thousand Eight Hundred Ninety

Basics

Value: 31889 → 31890 → 31891

Parity: even

Prime: No

Previous Prime: 31883

Next Prime: 31891

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 × 3 × 5 × 1063

Divisors: 1, 2, 3, 5, 6, 10, 15, 30, 1063, 2126

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111110010010010

Octal: 76222

Duodecimal: 16556

Hexadecimal: 7c92

Square: 1016972100

Square Root: 178.5777141750896

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

Dimension of invariants of n-th tensor power of 5-dimensional irreducible representation of B₂. A95922

Number of inequivalent n X 3 nonnegative integer arrays with row sums 3 and column sums n up to permutations of rows and columns. A377061

a(n) is the least k such that f(a(n-1)+1) + ... + f(k) > f(a(n-2)+1) + ... + f(a(n-1)) for n > 1, where f(n) = 1/(n+7) and a(1) = 1. A225922

Lucky numbers with size of gaps equal to 8 (lower terms). A31890