331311320239 has 2 divisors, whose sum is σ = 331311320240. Its totient is φ = 331311320238.

The previous prime is 331311320203. The next prime is 331311320251. The reversal of 331311320239 is 932023113133.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331311320239 is a prime.

It is a super-2 number, since 2×331311320239² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 331311320239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331311320279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165655660119 + 165655660120.

It is an arithmetic number, because the mean of its divisors is an integer number (165655660120).

Almost surely, 2^331311320239 is an apocalyptic number.

331311320239 is a deficient number, since it is larger than the sum of its proper divisors (1).

331311320239 is an equidigital number, since it uses as much as digits as its factorization.

331311320239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 31.

The spelling of 331311320239 in words is "three hundred thirty-one billion, three hundred eleven million, three hundred twenty thousand, two hundred thirty-nine".