320330031232 has 64 divisors (see below), whose sum is σ = 678670423200. Its totient is φ = 150170886144.

The previous prime is 320330031199. The next prime is 320330031247. The reversal of 320330031232 is 232130033023.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×320330031232² (a number of 24 digits) contains 22 as substring.

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, 443038 + ... + 914845.

Almost surely, 2^320330031232 is an apocalyptic number.

320330031232 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

320330031232 is an abundant number, since it is smaller than the sum of its proper divisors (358340391968).

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

320330031232 is a wasteful number, since it uses less digits than its factorization.

320330031232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1358013 (or 1358001 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 22.

Adding to 320330031232 its reverse (232130033023), we get a palindrome (552460064255).

The spelling of 320330031232 in words is "three hundred twenty billion, three hundred thirty million, thirty-one thousand, two hundred thirty-two".