315491328 has 88 divisors (see below), whose sum is σ = 934414560. Its totient is φ = 105154560.

The previous prime is 315491303. The next prime is 315491339. The reversal of 315491328 is 823194513.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 315491292 and 315491301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21943 + ... + 33353.

Almost surely, 2^315491328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 315491328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467207280).

315491328 is an abundant number, since it is smaller than the sum of its proper divisors (618923232).

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

315491328 is a wasteful number, since it uses less digits than its factorization.

315491328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11440 (or 11416 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 315491328 is about 17762.0755543940. The cubic root of 315491328 is about 680.7627887751.

The spelling of 315491328 in words is "three hundred fifteen million, four hundred ninety-one thousand, three hundred twenty-eight".