321320224 has 48 divisors (see below), whose sum is σ = 643930560. Its totient is φ = 157807360.

The previous prime is 321320221. The next prime is 321320269. The reversal of 321320224 is 422023123.

It is not an unprimeable number, because it can be changed into a prime (321320221) by changing a digit.

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, 825822 + ... + 826210.

It is an arithmetic number, because the mean of its divisors is an integer number (13415220).

Almost surely, 2^321320224 is an apocalyptic number.

It is an amenable number.

321320224 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

321320224 is a wasteful number, since it uses less digits than its factorization.

321320224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 785 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 321320224 is about 17925.4072199211. The cubic root of 321320224 is about 684.9297343878.

Adding to 321320224 its reverse (422023123), we get a palindrome (743343347).

The spelling of 321320224 in words is "three hundred twenty-one million, three hundred twenty thousand, two hundred twenty-four".