Properties of the Number 23913

Twenty-Three Thousand Nine Hundred Thirteen

Basics

Value: 23912 → 23913 → 23914

Parity: odd

Prime: No

Previous Prime: 23911

Next Prime: 23917

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 2657

Divisors: 1, 3, 9, 2657, 7971, 23913

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110101101001

Octal: 56551

Duodecimal: 11A09

Hexadecimal: 5d69

Square: 571831569

Square Root: 154.63828762631846

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 nonisomorphic graded posets with 0 and non-uniform Hasse graph of rank n, with exactly 2 elements of each rank level above 0. A206948

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 369", based on the 5-celled von Neumann neighborhood. A268503

Consider any concatenation of the type n = concat(a,b). Sequence lists numbers whose reverses are the sum of the products of some of such couples a and b. A281555

a(n) = s(1)t(n) + s(2)t(n-1) + ... + s(k)t(n-k+1), where k = [ n/2 ], s = (odd natural numbers), t = A000201 (lower Wythoff sequence). A25113

Decimal part of 1/a(n) starts with Fibonacci(n) (leading zeros excluded). A99405

θ series of A₂₂ lattice. A23913