320431152 has 20 divisors (see below), whose sum is σ = 827780600. Its totient is φ = 106810368.

The previous prime is 320431093. The next prime is 320431169. The reversal of 320431152 is 251134023.

It is a super-2 number, since 2×320431152² = 205352246344094208, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3337777 + ... + 3337872.

It is an arithmetic number, because the mean of its divisors is an integer number (41389030).

Almost surely, 2^320431152 is an apocalyptic number.

It is an amenable number.

320431152 is an abundant number, since it is smaller than the sum of its proper divisors (507349448).

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

320431152 is a wasteful number, since it uses less digits than its factorization.

320431152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6675660 (or 6675654 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 320431152 is about 17900.5908282380. The cubic root of 320431152 is about 684.2974322879.

Adding to 320431152 its reverse (251134023), we get a palindrome (571565175).

The spelling of 320431152 in words is "three hundred twenty million, four hundred thirty-one thousand, one hundred fifty-two".