321323312 has 20 divisors (see below), whose sum is σ = 634312080. Its totient is φ = 157629888.

The previous prime is 321323287. The next prime is 321323323. The reversal of 321323312 is 213323123.

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, 188612 + ... + 190307.

It is an arithmetic number, because the mean of its divisors is an integer number (31715604).

Almost surely, 2^321323312 is an apocalyptic number.

It is an amenable number.

321323312 is a deficient number, since it is larger than the sum of its proper divisors (312988768).

321323312 is a wasteful number, since it uses less digits than its factorization.

321323312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378980 (or 378974 counting only the distinct ones).

The product of its digits is 648, while the sum is 20.

The square root of 321323312 is about 17925.4933544380. The cubic root of 321323312 is about 684.9319285190.

Adding to 321323312 its reverse (213323123), we get a palindrome (534646435).

The spelling of 321323312 in words is "three hundred twenty-one million, three hundred twenty-three thousand, three hundred twelve".