Properties of the Number 23121

Twenty-Three Thousand One Hundred Twenty-One

Basics

Value: 23120 → 23121 → 23122

Parity: odd

Prime: No

Previous Prime: 23117

Next Prime: 23131

Digit Sum: 9

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 7 × 367

Divisors: 1, 3, 7, 9, 21, 63, 367, 1101, 2569, 3303

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101101001010001

Octal: 55121

Duodecimal: 11469

Hexadecimal: 5a51

Square: 534580641

Square Root: 152.05591076969023

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) = n*(5·n² - 3)/2. A63522

Powers of 3 written in base 4. A4658

a(n) = 20·n² + 1. A158493

Unique representation of nonnegative numbers by iterated tribonacci A, B and C sequences. A316713

A bisection of A063522. A160674

Number of partitions of n into 5-smooth parts. A112581

a(n) = 80·n² + 1. A158776

Number of ordered triples (w,x,y) with all terms in {-n,...-1,1,...,n} and w+2x+3y>0. A211621

Number of minimal total dominating sets in the n-barbell graph. A302650

Squares written in base 4. A1739