Properties of the Number 31224

Thirty-One Thousand Two Hundred Twenty-Four

Basics

Value: 31223 → 31224 → 31225

Parity: even

Prime: No

Previous Prime: 31223

Next Prime: 31231

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ³ × 3 × 1301

Divisors: 1, 2, 3, 4, 6, 8, 12, 24, 1301, 2602

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111100111111000

Octal: 74770

Duodecimal: 160A0

Hexadecimal: 79f8

Square: 974938176

Square Root: 176.70314088889307

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

a(n) = ∑_k=0..n C(n-k, floor(k/2)). A97333

Expansion of (1+x)(1+x²)/(1-x-x³). A3410

Expansion of (1 - x²)/(1 - x - x³). A58278

Sum of n and partition number of n. A133041

Expansion of ∏_m>=1 (1+x^m)³. A22568

Number of (17,11)-reverse multiples with n digits. A226916

Positions of the positive integers in the ordering of rational numbers as generated by the rules: 1 is in S, and if nonzero·is in S, then x+1 and -1/x are in S. (See Comments.) A226136

Expansion of (1-x)/(1-x-2·x²-x³). A78007

Positions of the integers in the ordering of rational numbers as generated by the rules: 1 is in S, and if nonzero·is in S, then x+1 and -1/x are in S. (See Comments.) A226137

Coordination sequence for 4-dimensional I-centered tetragonal orthogonal lattice. A1386