231057223 has 2 divisors, whose sum is σ = 231057224. Its totient is φ = 231057222.

The previous prime is 231057173. The next prime is 231057247. The reversal of 231057223 is 322750132.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231057223 - 2²⁵ = 197502791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231057283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115528611 + 115528612.

It is an arithmetic number, because the mean of its divisors is an integer number (115528612).

Almost surely, 2^231057223 is an apocalyptic number.

231057223 is a deficient number, since it is larger than the sum of its proper divisors (1).

231057223 is an equidigital number, since it uses as much as digits as its factorization.

231057223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 231057223 is about 15200.5665354947. The cubic root of 231057223 is about 613.6299047833.

The spelling of 231057223 in words is "two hundred thirty-one million, fifty-seven thousand, two hundred twenty-three".