315985616 has 10 divisors (see below), whose sum is σ = 612222162. Its totient is φ = 157992800.

The previous prime is 315985597. The next prime is 315985619. The reversal of 315985616 is 616589513.

It can be written as a sum of positive squares in only one way, i.e., 171505216 + 144480400 = 13096^2 + 12020^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315985619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9874535 + ... + 9874566.

Almost surely, 2^315985616 is an apocalyptic number.

It is an amenable number.

315985616 is a deficient number, since it is larger than the sum of its proper divisors (296236546).

315985616 is a wasteful number, since it uses less digits than its factorization.

315985616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19749109 (or 19749103 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The square root of 315985616 is about 17775.9842484179. The cubic root of 315985616 is about 681.1181258528.

The spelling of 315985616 in words is "three hundred fifteen million, nine hundred eighty-five thousand, six hundred sixteen".