321231023432 has 64 divisors (see below), whose sum is σ = 660510676800. Its totient is φ = 145248768000.

The previous prime is 321231023371. The next prime is 321231023437. The reversal of 321231023432 is 234320132123.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (321231023437) 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 15 ways as a sum of consecutive naturals, for example, 56462444 + ... + 56468132.

It is an arithmetic number, because the mean of its divisors is an integer number (10320479325).

Almost surely, 2^321231023432 is an apocalyptic number.

It is an amenable number.

321231023432 is an abundant number, since it is smaller than the sum of its proper divisors (339279653368).

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

321231023432 is a wasteful number, since it uses less digits than its factorization.

321231023432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8958 (or 8954 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 321231023432 its reverse (234320132123), we get a palindrome (555551155555).

The spelling of 321231023432 in words is "three hundred twenty-one billion, two hundred thirty-one million, twenty-three thousand, four hundred thirty-two".