331323120131 has 4 divisors (see below), whose sum is σ = 331324271352. Its totient is φ = 331321968912.

The previous prime is 331323120109. The next prime is 331323120157. The reversal of 331323120131 is 131021323133.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 331323120131 - 2¹⁴ = 331323103747 is a prime.

It is a super-2 number, since 2×331323120131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 331323120097 and 331323120106.

It is not an unprimeable number, because it can be changed into a prime (331323122131) 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, 284900 + ... + 862446.

It is an arithmetic number, because the mean of its divisors is an integer number (82831067838).

Almost surely, 2^331323120131 is an apocalyptic number.

331323120131 is a deficient number, since it is larger than the sum of its proper divisors (1151221).

331323120131 is an equidigital number, since it uses as much as digits as its factorization.

331323120131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151220.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 331323120131 its reverse (131021323133), we get a palindrome (462344443264).

The spelling of 331323120131 in words is "three hundred thirty-one billion, three hundred twenty-three million, one hundred twenty thousand, one hundred thirty-one".