Properties of the Number 23212

Twenty-Three Thousand Two Hundred Twelve

Basics

Value: 23211 → 23212 → 23213

Parity: even

Prime: No

Previous Prime: 23209

Next Prime: 23227

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 7 × 829

Divisors: 1, 2, 4, 7, 14, 28, 829, 1658, 3316, 5803

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101101010101100

Octal: 55254

Duodecimal: 11524

Hexadecimal: 5aac

Square: 538796944

Square Root: 152.354848954669

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

Integers which can be written in exactly three ways as sum of two distinct nonzero pentagonal numbers. A333013

First differences (A131771) equal this sequence with terms repeated at positions: {m*(m+1)/2, m>=0}. A131770

First differences (A131772) equal this sequence with zeros inserted at positions {m*(m+1)/2, m>=0}. A131771

a(n) = [xⁿ] ∏_k=1..n (1+x^k)² / x^k. A258797

Output of the linear congruential pseudo-random number generator used in function rand() as described in Kernighan and Ritchie, when seeded with 0. A96554

Partial sums (A131771) equal this sequence excluding zeros located at positions {m*(m+1)/2, m>=0}, with a(0)=1. A131772

Number of partitions of 2n into exactly 5 parts. A256309

Number of partitions of 4n into exactly 5 parts. A256316

Composite k such that the primorial inflation of k is a sum of distinct primorial numbers. A351959

Repeated terms in A131771; a(n) = A131770( (n+1)*(n+2)/2 - 1 ) for n>=0. A131786