Properties of the Number 20431

Twenty Thousand Four Hundred Thirty-One

Basics

Value: 20430 → 20431 → 20432

Parity: odd

Prime: Yes

Previous Prime: 20411

Next Prime: 20441

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 20431

Divisors: 1, 20431

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

4823 Try Today's Challenge

Representations

Binary: 100111111001111

Octal: 47717

Duodecimal: B9A7

Hexadecimal: 4fcf

Square: 417425761

Square Root: 142.93704908105525

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

Primes p such that A001175(p) = (p-1)/9. A308794

Primes p such that A001177(p) = (p-1)/9. A308802

Primes that are palindromic in base 5. A29973

Smallest prime factor of n!-1 (for n>2), a(2)=1. A54415

Primes p such that 42·p-1, 42·p+1 and 48·p-1, 48·p+1 are twin primes. A138697

Numerators of the Nielsen-Jacobsthal series leading to Euler's constant. A262856

Primes whose digits can be arranged in increasing cyclic order - to form a substring of 123456789012345678901234567890... A68710

Five-digit primes which use each of the decimal digits 0 through 4 exactly once. A109176

Primes congruent to 17 mod 59. A142744

Primes formed by rearranging five consecutive decimal digits (avoiding leading 0). A156119