320315172 has 24 divisors (see below), whose sum is σ = 747877536. Its totient is φ = 106703808.

The previous prime is 320315159. The next prime is 320315197. The reversal of 320315172 is 271513023.

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, 13423 + ... + 28649.

It is an arithmetic number, because the mean of its divisors is an integer number (31161564).

Almost surely, 2^320315172 is an apocalyptic number.

It is an amenable number.

320315172 is an abundant number, since it is smaller than the sum of its proper divisors (427562364).

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

320315172 is a wasteful number, since it uses less digits than its factorization.

320315172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16987 (or 16985 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 320315172 is about 17897.3509771698. The cubic root of 320315172 is about 684.2148618793.

Adding to 320315172 its reverse (271513023), we get a palindrome (591828195).

The spelling of 320315172 in words is "three hundred twenty million, three hundred fifteen thousand, one hundred seventy-two".