323220320 has 48 divisors (see below), whose sum is σ = 808532928. Its totient is φ = 121681920.

The previous prime is 323220319. The next prime is 323220413. The reversal of 323220320 is 23022323.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

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, 56696 + ... + 62135.

It is an arithmetic number, because the mean of its divisors is an integer number (16844436).

Almost surely, 2^323220320 is an apocalyptic number.

It is an amenable number.

323220320 is an abundant number, since it is smaller than the sum of its proper divisors (485312608).

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

323220320 is a wasteful number, since it uses less digits than its factorization.

323220320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118863 (or 118855 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 17.

The square root of 323220320 is about 17978.3291770954. The cubic root of 323220320 is about 686.2771704222.

Adding to 323220320 its reverse (23022323), we get a palindrome (346242643).

The spelling of 323220320 in words is "three hundred twenty-three million, two hundred twenty thousand, three hundred twenty".