120031131321 has 12 divisors (see below), whose sum is σ = 173457030448. Its totient is φ = 79984417464.

The previous prime is 120031131317. The next prime is 120031131323. The reversal of 120031131321 is 123131130021.

120031131321 is a `hidden beast` number, since 1 + 2 + 0 + 0 + 311 + 31 + 321 = 666.

It is not a de Polignac number, because 120031131321 - 2² = 120031131317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120031131294 and 120031131303.

It is not an unprimeable number, because it can be changed into a prime (120031131323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3007135 + ... + 3046788.

Almost surely, 2^120031131321 is an apocalyptic number.

It is an amenable number.

120031131321 is a deficient number, since it is larger than the sum of its proper divisors (53425899127).

120031131321 is a wasteful number, since it uses less digits than its factorization.

120031131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6056132 (or 6056129 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 120031131321 its reverse (123131130021), we get a palindrome (243162261342).

The spelling of 120031131321 in words is "one hundred twenty billion, thirty-one million, one hundred thirty-one thousand, three hundred twenty-one".