321131331013212 has 36 divisors (see below), whose sum is σ = 811762093334920. Its totient is φ = 107042003239392.

The previous prime is 321131331013151. The next prime is 321131331013237. The reversal of 321131331013212 is 212310133131123.

321131331013212 is a `hidden beast` number, since 3 + 2 + 1 + 1 + 3 + 1 + 331 + 0 + 1 + 321 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71703262 + ... + 76050117.

Almost surely, 2^{321131331013212} is an apocalyptic number.

It is an amenable number.

321131331013212 is an abundant number, since it is smaller than the sum of its proper divisors (490630762321708).

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

321131331013212 is a wasteful number, since it uses less digits than its factorization.

321131331013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147813762 (or 147813757 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

Adding to 321131331013212 its reverse (212310133131123), we get a palindrome (533441464144335).

The spelling of 321131331013212 in words is "three hundred twenty-one trillion, one hundred thirty-one billion, three hundred thirty-one million, thirteen thousand, two hundred twelve".