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Properties of the Number -2931

Nine Hundred Thirty-One

Basics

Value: -2932 → -2931 → -2930

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 3 × 977

Divisors: 1, 3, 977, 2931

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -101101110011

Octal: -5563

Duodecimal: -1843

Hexadecimal: -b73

Square: 8590761

Square Root: 54.13871073455665

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

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 377", based on the 5-celled von Neumann neighborhood. A271464
First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 491", based on the 5-celled von Neumann neighborhood. A272542
Concatenate the n-th and (n+1)st prime. A45533
Number of strict non-knapsack integer partitions of n, meaning not every subset has a different sum. A316402
Numbers k such that the digits of σ(k) are a permutation of those of k, in base 10. A115920
Weak Goodstein sequence starting at 11. A137411
Inverse Euler transform of the Moebius function A008683. A320781
T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 7. A252201
Matula-Goebel numbers of locally stable rooted identity trees, meaning no branch is a subset of any other branch of the same root. A316467
Number of maximal sum-free and product-free subsets of {1..n}. A326497

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