321404040432 has 120 divisors (see below), whose sum is σ = 977369269760. Its totient is φ = 98221921920.

The previous prime is 321404040383. The next prime is 321404040449. The reversal of 321404040432 is 234040404123.

It is a happy number.

321404040432 is a `hidden beast` number, since 3 + 214 + 0 + 40 + 404 + 3 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 321404040396 and 321404040405.

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 23 ways as a sum of consecutive naturals, for example, 1809898 + ... + 1979529.

Almost surely, 2^321404040432 is an apocalyptic number.

It is an amenable number.

321404040432 is an abundant number, since it is smaller than the sum of its proper divisors (655965229328).

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

321404040432 is a wasteful number, since it uses less digits than its factorization.

321404040432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3789491 (or 3789482 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 321404040432 its reverse (234040404123), we get a palindrome (555444444555).

The spelling of 321404040432 in words is "three hundred twenty-one billion, four hundred four million, forty thousand, four hundred thirty-two".