321021432104 has 16 divisors (see below), whose sum is σ = 601944981120. Its totient is φ = 160502770480.

The previous prime is 321021432103. The next prime is 321021432119. The reversal of 321021432104 is 401234120123.

It is a self number, because there is not a number n which added to its sum of digits gives 321021432104.

It is not an unprimeable number, because it can be changed into a prime (321021432103) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 819704 + ... + 1146279.

It is an arithmetic number, because the mean of its divisors is an integer number (37621561320).

Almost surely, 2^321021432104 is an apocalyptic number.

It is an amenable number.

321021432104 is a deficient number, since it is larger than the sum of its proper divisors (280923549016).

321021432104 is a wasteful number, since it uses less digits than its factorization.

321021432104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1986400 (or 1986396 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 321021432104 its reverse (401234120123), we get a palindrome (722255552227).

The spelling of 321021432104 in words is "three hundred twenty-one billion, twenty-one million, four hundred thirty-two thousand, one hundred four".