320031312 has 40 divisors (see below), whose sum is σ = 832033056. Its totient is φ = 105995136.

The previous prime is 320031253. The next prime is 320031337. The reversal of 320031312 is 213130023.

It is a junction number, because it is equal to n+sod(n) for n = 320031291 and 320031300.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 13698 + ... + 28769.

Almost surely, 2^320031312 is an apocalyptic number.

It is an amenable number.

320031312 is an abundant number, since it is smaller than the sum of its proper divisors (512001744).

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

320031312 is a wasteful number, since it uses less digits than its factorization.

320031312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42635 (or 42629 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 320031312 is about 17889.4189955963. The cubic root of 320031312 is about 684.0126874292.

Adding to 320031312 its reverse (213130023), we get a palindrome (533161335).

The spelling of 320031312 in words is "three hundred twenty million, thirty-one thousand, three hundred twelve".