321303312320 has 56 divisors (see below), whose sum is σ = 765152906064. Its totient is φ = 128513028096.

The previous prime is 321303312299. The next prime is 321303312361. The reversal of 321303312320 is 23213303123.

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, 8173352 + ... + 8212568.

Almost surely, 2^321303312320 is an apocalyptic number.

It is an amenable number.

321303312320 is an abundant number, since it is smaller than the sum of its proper divisors (443849593744).

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

321303312320 is a wasteful number, since it uses less digits than its factorization.

321303312320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64837 (or 64827 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 321303312320 its reverse (23213303123), we get a palindrome (344516615443).

The spelling of 321303312320 in words is "three hundred twenty-one billion, three hundred three million, three hundred twelve thousand, three hundred twenty".