315197920 has 24 divisors (see below), whose sum is σ = 744655464. Its totient is φ = 126079104.

The previous prime is 315197917. The next prime is 315197951. The reversal of 315197920 is 29791513.

It is a super-5 number, since 5×315197920⁵ (a number of 44 digits) contains 55555 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 315197920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 984834 + ... + 985153.

It is an arithmetic number, because the mean of its divisors is an integer number (31027311).

Almost surely, 2^315197920 is an apocalyptic number.

It is an amenable number.

315197920 is an abundant number, since it is smaller than the sum of its proper divisors (429457544).

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

315197920 is a wasteful number, since it uses less digits than its factorization.

315197920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1970002 (or 1969994 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 315197920 is about 17753.8142380729. The cubic root of 315197920 is about 680.5516860890.

The spelling of 315197920 in words is "three hundred fifteen million, one hundred ninety-seven thousand, nine hundred twenty".