Properties of the Number 23681

Twenty-Three Thousand Six Hundred Eighty-One

Basics

Value: 23680 → 23681 → 23682

Parity: odd

Prime: No

Previous Prime: 23677

Next Prime: 23687

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 7 × 17 × 199

Divisors: 1, 7, 17, 119, 199, 1393, 3383, 23681

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110010000001

Octal: 56201

Duodecimal: 11855

Hexadecimal: 5c81

Square: 560789761

Square Root: 153.88632167934875

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

Nonnegative values·of solutions (x, y) to the Diophantine equation x² + (x+199)² = y². A129993

Numbers that are the sum of one or more consecutive squares in more than one way. A130052

Numbers that are sums of 2 or more consecutive squares in more than 1 way. A62681

Number of partitions p of n such that m(p) = m(c(p)), where m = minimal multiplicity of parts, and c = conjugate. A240731

Numbers that can be written as the sum of four or more consecutive squares in more than one way. A307937

p·B_p-1+1 modulo p², where p = prime(n) and B_i denotes the i-th Bernoulli number. A268000

Discriminants of quartic fields with 2 complex conjugates (negated). A23681

Numbers k such that there exist equal sums of k and 2k consecutive positive squares. A346163