Properties of the Number -2631

Six Hundred Thirty-One

Basics

Value: -2632 → -2631 → -2630

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 3 × 877

Divisors: 1, 3, 877, 2631

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -101001000111

Octal: -5107

Duodecimal: -1633

Hexadecimal: -a47

Square: 6922161

Square Root: 51.29327441292864

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

Expansion of g.f. A(x) = ∑_n=-oo..+oo xⁿ * (i + xⁿ)^2·n, where i² = -1. A363569

Expansion of 1 / ∑_{k in Z} x^3·k / (1 - x^5·k+1). A375064

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 493", based on the 5-celled von Neumann neighborhood. A272546

Tetranacci numbers with different initial conditions: a(n) = a(n-1) + a(n-2) + a(n-3) + a(n-4) starting with a(0)=4, a(1)=1, a(2)=3, a(3)=7. A73817

Expansion of q * (f(q⁹) / f(q))³ in powers of q where f() is a Ramanujan θ function. A227454

Tetranacci numbers A073817 without the leading term 4. A1648

Number of winning length n strings with a 3-symbol alphabet in "same game". A35617

Numbers k such that lcm(1,2,3,...,k)/5 equals the denominator of the k-th harmonic number H(k). A112814

Positions of 5's on the spiral defined in A308890. A308895

Square array T(b,m), read by descending antidiagonals: Number of winning length m strings with a b-symbol alphabet in "same game" (b >= 2, m >= 0). A323844