120331031321 has 4 divisors (see below), whose sum is σ = 121249588944. Its totient is φ = 119412473700.

The previous prime is 120331031281. The next prime is 120331031339. The reversal of 120331031321 is 123130133021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120331031321 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120331031293 and 120331031302.

It is not an unprimeable number, because it can be changed into a prime (120331031621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459278615 + ... + 459278876.

It is an arithmetic number, because the mean of its divisors is an integer number (30312397236).

Almost surely, 2^120331031321 is an apocalyptic number.

It is an amenable number.

120331031321 is a deficient number, since it is larger than the sum of its proper divisors (918557623).

120331031321 is an equidigital number, since it uses as much as digits as its factorization.

120331031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918557622.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 120331031321 its reverse (123130133021), we get a palindrome (243461164342).

The spelling of 120331031321 in words is "one hundred twenty billion, three hundred thirty-one million, thirty-one thousand, three hundred twenty-one".