321304313212 has 24 divisors (see below), whose sum is σ = 564728928512. Its totient is φ = 159953972400.

The previous prime is 321304313191. The next prime is 321304313219. The reversal of 321304313212 is 212313403123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321304313219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1562803 + ... + 1756405.

Almost surely, 2^321304313212 is an apocalyptic number.

It is an amenable number.

321304313212 is a deficient number, since it is larger than the sum of its proper divisors (243424615300).

321304313212 is a wasteful number, since it uses less digits than its factorization.

321304313212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195409 (or 195407 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 321304313212 its reverse (212313403123), we get a palindrome (533617716335).

The spelling of 321304313212 in words is "three hundred twenty-one billion, three hundred four million, three hundred thirteen thousand, two hundred twelve".