321204434404 has 24 divisors (see below), whose sum is σ = 653297158080. Its totient is φ = 135325838496.

The previous prime is 321204434389. The next prime is 321204434423. The reversal of 321204434404 is 404434402123.

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 7 ways as a sum of consecutive naturals, for example, 97215187 + ... + 97218490.

It is an arithmetic number, because the mean of its divisors is an integer number (27220714920).

Almost surely, 2^321204434404 is an apocalyptic number.

It is an amenable number.

321204434404 is an abundant number, since it is smaller than the sum of its proper divisors (332092723676).

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

321204434404 is a wasteful number, since it uses less digits than its factorization.

321204434404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194433747 (or 194433745 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 321204434404 its reverse (404434402123), we get a palindrome (725638836527).

The spelling of 321204434404 in words is "three hundred twenty-one billion, two hundred four million, four hundred thirty-four thousand, four hundred four".