321239638104 has 128 divisors (see below), whose sum is σ = 1012517107200. Its totient is φ = 82501309440.

The previous prime is 321239638081. The next prime is 321239638121. The reversal of 321239638104 is 401836932123.

321239638104 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 812107 + ... + 1141050.

It is an arithmetic number, because the mean of its divisors is an integer number (7910289900).

Almost surely, 2^321239638104 is an apocalyptic number.

It is an amenable number.

321239638104 is an abundant number, since it is smaller than the sum of its proper divisors (691277469096).

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

321239638104 is a wasteful number, since it uses less digits than its factorization.

321239638104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953273 (or 1953269 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 42.

The spelling of 321239638104 in words is "three hundred twenty-one billion, two hundred thirty-nine million, six hundred thirty-eight thousand, one hundred four".