315125866 has 12 divisors (see below), whose sum is σ = 519567426. Its totient is φ = 143238920.

The previous prime is 315125843. The next prime is 315125873. The reversal of 315125866 is 668521513.

It can be written as a sum of positive squares in only one way, i.e., 314033841 + 1092025 = 17721^2 + 1045^2 .

It is a super-2 number, since 2×315125866² = 198608622844499912, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 650845 + ... + 651328.

Almost surely, 2^315125866 is an apocalyptic number.

315125866 is a deficient number, since it is larger than the sum of its proper divisors (204441560).

315125866 is a wasteful number, since it uses less digits than its factorization.

315125866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302197 (or 1302186 counting only the distinct ones).

The product of its digits is 43200, while the sum is 37.

The square root of 315125866 is about 17751.7848680069. The cubic root of 315125866 is about 680.4998242745.

The spelling of 315125866 in words is "three hundred fifteen million, one hundred twenty-five thousand, eight hundred sixty-six".