331220321131323 has 16 divisors (see below), whose sum is σ = 475599344249120. Its totient is φ = 203827489461504.

The previous prime is 331220321131309. The next prime is 331220321131339. The reversal of 331220321131323 is 323131123022133.

It is not a de Polignac number, because 331220321131323 - 2¹⁰ = 331220321130299 is a prime.

It is a super-2 number, since 2×331220321131323² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (331220321131363) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12415365 + ... + 28575897.

It is an arithmetic number, because the mean of its divisors is an integer number (29724959015570).

Almost surely, 2^{331220321131323} is an apocalyptic number.

331220321131323 is a deficient number, since it is larger than the sum of its proper divisors (144379023117797).

331220321131323 is a wasteful number, since it uses less digits than its factorization.

331220321131323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16686078.

The product of its (nonzero) digits is 11664, while the sum is 30.

Adding to 331220321131323 its reverse (323131123022133), we get a palindrome (654351444153456).

The spelling of 331220321131323 in words is "three hundred thirty-one trillion, two hundred twenty billion, three hundred twenty-one million, one hundred thirty-one thousand, three hundred twenty-three".