321303032120 has 128 divisors (see below), whose sum is σ = 896145586560. Its totient is φ = 101152112640.

The previous prime is 321303032111. The next prime is 321303032191. The reversal of 321303032120 is 21230303123.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 321303032092 and 321303032101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 628019 + ... + 1018338.

It is an arithmetic number, because the mean of its divisors is an integer number (7001137395).

Almost surely, 2^321303032120 is an apocalyptic number.

It is an amenable number.

321303032120 is an abundant number, since it is smaller than the sum of its proper divisors (574842554440).

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

321303032120 is a wasteful number, since it uses less digits than its factorization.

321303032120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646433 (or 1646429 counting only the distinct ones).

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

Adding to 321303032120 its reverse (21230303123), we get a palindrome (342533335243).

The spelling of 321303032120 in words is "three hundred twenty-one billion, three hundred three million, thirty-two thousand, one hundred twenty".