Properties of the Number 2531

Two Thousand Five Hundred Thirty-One

Basics

Value: 2530 → 2531 → 2532

Parity: odd

Prime: Yes

Previous Prime: 2521

Next Prime: 2539

Digit Sum: 11

Digital Root: 2

Palindrome: No

Factorization: 2531

Divisors: 1, 2531

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100111100011

Octal: 4743

Duodecimal: 156B

Hexadecimal: 9e3

Square: 6405961

Square Root: 50.309044912421065

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

Centered 10-gonal numbers. A62786

Number of partitions of n such that the successive differences of consecutive parts are nondecreasing. A240026

Lower prime of a difference of 8 between consecutive primes. A31926

Concentric pentagonal numbers: floor( 5·n² / 4 ). A32527

Primes p such that x²³ = 2 has no solution mod p. A40984

Primes of the form 5k² + 5k + 1. A90562

Primes such that the sum of the predecessor and successor primes is divisible by 11. A112789

Primes such that the sum of the predecessor and successor primes is divisible by 23. A112847

T(n,k)=Number of strings of numbers x(i=1..n) in 0..k with sum i²*x(i)² equal to n²*k². A184240

Primes congruent to 11 (mod 30). A132232