321204412 has 6 divisors (see below), whose sum is σ = 562107728. Its totient is φ = 160602204.

The previous prime is 321204391. The next prime is 321204413. The reversal of 321204412 is 214402123.

It is a self number, because there is not a number n which added to its sum of digits gives 321204412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321204413) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40150548 + ... + 40150555.

Almost surely, 2^321204412 is an apocalyptic number.

It is an amenable number.

321204412 is a deficient number, since it is larger than the sum of its proper divisors (240903316).

321204412 is a wasteful number, since it uses less digits than its factorization.

321204412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80301107 (or 80301105 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 321204412 is about 17922.1765419270. The cubic root of 321204412 is about 684.8474357872.

Adding to 321204412 its reverse (214402123), we get a palindrome (535606535).

The spelling of 321204412 in words is "three hundred twenty-one million, two hundred four thousand, four hundred twelve".