315323320 has 96 divisors (see below), whose sum is σ = 790745760. Its totient is φ = 112492800.

The previous prime is 315323311. The next prime is 315323321. The reversal of 315323320 is 23323513.

It is a happy number.

315323320 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×315323320² = 198857592271644800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 315323291 and 315323300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315323321) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 499405 + ... + 500035.

It is an arithmetic number, because the mean of its divisors is an integer number (8236935).

Almost surely, 2^315323320 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 315323320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395372880).

315323320 is an abundant number, since it is smaller than the sum of its proper divisors (475422440).

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

315323320 is a wasteful number, since it uses less digits than its factorization.

315323320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717 (or 682 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 22.

The square root of 315323320 is about 17757.3455223465. The cubic root of 315323320 is about 680.6419255449.

Adding to 315323320 its reverse (23323513), we get a palindrome (338646833).

The spelling of 315323320 in words is "three hundred fifteen million, three hundred twenty-three thousand, three hundred twenty".