315207640 has 64 divisors (see below), whose sum is σ = 807356160. Its totient is φ = 109633920.

The previous prime is 315207637. The next prime is 315207643. The reversal of 315207640 is 46702513.

315207640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (315207637) and next prime (315207643).

It is a junction number, because it is equal to n+sod(n) for n = 315207599 and 315207608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315207643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5454 + ... + 25693.

It is an arithmetic number, because the mean of its divisors is an integer number (12614940).

Almost surely, 2^315207640 is an apocalyptic number.

It is an amenable number.

315207640 is an abundant number, since it is smaller than the sum of its proper divisors (492148520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315207640 is a wasteful number, since it uses less digits than its factorization.

315207640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31192 (or 31188 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 315207640 is about 17754.0879799555. The cubic root of 315207640 is about 680.5586815819.

The spelling of 315207640 in words is "three hundred fifteen million, two hundred seven thousand, six hundred forty".