315272231 has 2 divisors, whose sum is σ = 315272232. Its totient is φ = 315272230.

The previous prime is 315272197. The next prime is 315272233. The reversal of 315272231 is 132272513.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 315272231 - 2¹⁰ = 315271207 is a prime.

It is a super-2 number, since 2×315272231² = 198793159279434722, which contains 22 as substring.

Together with 315272233, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 315272231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315272233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157636115 + 157636116.

It is an arithmetic number, because the mean of its divisors is an integer number (157636116).

Almost surely, 2^315272231 is an apocalyptic number.

315272231 is a deficient number, since it is larger than the sum of its proper divisors (1).

315272231 is an equidigital number, since it uses as much as digits as its factorization.

315272231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2520, while the sum is 26.

The square root of 315272231 is about 17755.9069326239. The cubic root of 315272231 is about 680.6051641308.

The spelling of 315272231 in words is "three hundred fifteen million, two hundred seventy-two thousand, two hundred thirty-one".