315315157 has 2 divisors, whose sum is σ = 315315158. Its totient is φ = 315315156.

The previous prime is 315315139. The next prime is 315315193. The reversal of 315315157 is 751513513.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 315098001 + 217156 = 17751^2 + 466^2 .

It is an emirp because it is prime and its reverse (751513513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 315315157 - 2¹⁹ = 314790869 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (315315137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157657578 + 157657579.

It is an arithmetic number, because the mean of its divisors is an integer number (157657579).

Almost surely, 2^315315157 is an apocalyptic number.

It is an amenable number.

315315157 is a deficient number, since it is larger than the sum of its proper divisors (1).

315315157 is an equidigital number, since it uses as much as digits as its factorization.

315315157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7875, while the sum is 31.

The square root of 315315157 is about 17757.1156723157. The cubic root of 315315157 is about 680.6360520730.

The spelling of 315315157 in words is "three hundred fifteen million, three hundred fifteen thousand, one hundred fifty-seven".