320401252 has 12 divisors (see below), whose sum is σ = 560828016. Its totient is φ = 160164680.

The previous prime is 320401243. The next prime is 320401267. The reversal of 320401252 is 252104023.

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, 27783 + ... + 37585.

It is an arithmetic number, because the mean of its divisors is an integer number (46735668).

Almost surely, 2^320401252 is an apocalyptic number.

It is an amenable number.

320401252 is a deficient number, since it is larger than the sum of its proper divisors (240426764).

320401252 is a wasteful number, since it uses less digits than its factorization.

320401252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17978 (or 17976 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 320401252 is about 17899.7556407902. The cubic root of 320401252 is about 684.2761472896.

Adding to 320401252 its reverse (252104023), we get a palindrome (572505275).

The spelling of 320401252 in words is "three hundred twenty million, four hundred one thousand, two hundred fifty-two".