Properties of the Number -31821

Thirty-One Thousand Eight Hundred Twenty-One

Basics

Value: -31822 → -31821 → -31820

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 10607

Divisors: 1, 3, 10607, 31821

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -111110001001101

Octal: -76115

Duodecimal: -164B9

Hexadecimal: -7c4d

Square: 1012576041

Square Root: 178.38441635972578

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 integer partitions of n with all distinct lengths of maximal gapless runs (decreasing by 0 or 1). A384884

Numbers n such that 54 'Reverse and Add' steps are needed to reach a palindrome. A65321

Growth function of an infinite cubic graph (number of nodes at distance <=n from fixed node). A38621

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 630", based on the 5-celled von Neumann neighborhood. A269543