315239157 has 12 divisors (see below), whose sum is σ = 460462860. Its totient is φ = 207797568.

The previous prime is 315239147. The next prime is 315239161. The reversal of 315239157 is 751932513.

It can be written as a sum of positive squares in 2 ways, for example, as 207619281 + 107619876 = 14409^2 + 10374^2 .

It is not a de Polignac number, because 315239157 - 2¹⁴ = 315222773 is a prime.

It is a super-2 number, since 2×315239157² = 198751452212141298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315239107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195978 + ... + 197579.

It is an arithmetic number, because the mean of its divisors is an integer number (38371905).

Almost surely, 2^315239157 is an apocalyptic number.

It is an amenable number.

315239157 is a deficient number, since it is larger than the sum of its proper divisors (145223703).

315239157 is a wasteful number, since it uses less digits than its factorization.

315239157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393652 (or 393649 counting only the distinct ones).

The product of its digits is 28350, while the sum is 36.

The square root of 315239157 is about 17754.9755561645. The cubic root of 315239157 is about 680.5813634064.

The spelling of 315239157 in words is "three hundred fifteen million, two hundred thirty-nine thousand, one hundred fifty-seven".