Properties of the Number 27431

Twenty-Seven Thousand Four Hundred Thirty-One

Basics

Value: 27430 → 27431 → 27432

Parity: odd

Prime: Yes

Previous Prime: 27427

Next Prime: 27437

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 27431

Divisors: 1, 27431

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110101100100111

Octal: 65447

Duodecimal: 13A5B

Hexadecimal: 6b27

Square: 752459761

Square Root: 165.62306602644452

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

Numbers whose least quadratic nonresidue (A020649) is 17. A25026

Prime number spiral (clockwise, West spoke). A54570

a(n) = -2·a(n-1) + a(n-2) + a(n-3) with a(0)=a(1)=-1, a(2)=1. A215112

Number of partitions in parts not of the form 13k, 13k+3 or 13k-3. Also number of partitions with at most 2 parts of size 1 and differences between parts at distance 5 are greater than 1. A35951

Numbers k such that digit sum of 3^k is a power of 3. A118872

Fixed points of A275957; numbers n for which A060125(n) = A225901(n). A275843

Indices k such that 13 plus the k-th triangular number is a perfect square. A154144

Primes with 17 as smallest positive primitive root. A61329

n²-79·n+1601 as n runs through the lucky numbers. A87867

Primes such that applying "reverse and add" twice produces two more primes. A174402