508931231 has 2 divisors, whose sum is σ = 508931232. Its totient is φ = 508931230.

The previous prime is 508931197. The next prime is 508931233. The reversal of 508931231 is 132139805.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 508931231 - 2⁶ = 508931167 is a prime.

It is a super-2 number, since 2×508931231² = 518021995774350722, which contains 22 as substring.

Together with 508931233, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (508931233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 254465615 + 254465616.

It is an arithmetic number, because the mean of its divisors is an integer number (254465616).

Almost surely, 2^508931231 is an apocalyptic number.

508931231 is a deficient number, since it is larger than the sum of its proper divisors (1).

508931231 is an equidigital number, since it uses as much as digits as its factorization.

508931231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 508931231 is about 22559.5042277086. The cubic root of 508931231 is about 798.3984788645.

The spelling of 508931231 in words is "five hundred eight million, nine hundred thirty-one thousand, two hundred thirty-one".