320431912 has 32 divisors (see below), whose sum is σ = 638020800. Its totient is φ = 150348544.

The previous prime is 320431897. The next prime is 320431921. The reversal of 320431912 is 219134023.

It is a super-2 number, since 2×320431912² = 205353220455951488, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45543 + ... + 52105.

It is an arithmetic number, because the mean of its divisors is an integer number (19938150).

Almost surely, 2^320431912 is an apocalyptic number.

It is an amenable number.

320431912 is a deficient number, since it is larger than the sum of its proper divisors (317588888).

320431912 is a wasteful number, since it uses less digits than its factorization.

320431912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945 (or 6941 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 320431912 is about 17900.6120565750. The cubic root of 320431912 is about 684.2979732941.

Adding to 320431912 its reverse (219134023), we get a palindrome (539565935).

It can be divided in two parts, 32043 and 1912, that multiplied together give a palindrome (61266216).

The spelling of 320431912 in words is "three hundred twenty million, four hundred thirty-one thousand, nine hundred twelve".