Properties of the Number 9131

Nine Thousand One Hundred Thirty-One

Basics

Value: 9130 → 9131 → 9132

Parity: odd

Prime: No

Previous Prime: 9127

Next Prime: 9133

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 23 × 397

Divisors: 1, 23, 397, 9131

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001110101011

Octal: 21653

Duodecimal: 534B

Hexadecimal: 23ab

Square: 83375161

Square Root: 95.55626614722867

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

Fermat pseudoprimes to base 4. A20136

a(1) = 1; a(n) = max{ 5·a(k) + a(n-k) | 1 <= k <= n/2 } for n > 1. A130667

Number of ways to choose an integer partition of each factor in a factorization of n. A318948

Number of 3-dimensional polyominoes (or polycubes) with n cells and rotational symmetry group of order exactly 4. A66281

Semiprimes in A056108. A113527

Start with 1013 and repeatedly reverse the digits and add 2 to get the next term. A120214

a(0) = 16, after which, if a(n-1) = ∏_{k >= 1} (p_k)^c_k, then a(n) = (1/2) * (1 + ∏_{k >= 1} (p_k+1)^c_k), where p_k indicates the k-th prime, A000040(k). A246344

Numbers k such that 2^2k-1 == 2 (mod 2k) and such that 2^k-1 ≠ 1 (mod k). A176033

Number of vertices in truncated tetrahedron with faces that are centered polygons. A193218

If n = Sum 2^e_i, e_i distinct, then a(n) = Position of (product prime_{e_i+1}) among squarefree numbers (A005117). A246353