331310031361 has 2 divisors, whose sum is σ = 331310031362. Its totient is φ = 331310031360.

The previous prime is 331310031313. The next prime is 331310031467. The reversal of 331310031361 is 163130013133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306046836225 + 25263195136 = 553215^2 + 158944^2 .

It is a cyclic number.

It is not a de Polignac number, because 331310031361 - 2⁷ = 331310031233 is a prime.

It is not a weakly prime, because it can be changed into another prime (331310631361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165655015680 + 165655015681.

It is an arithmetic number, because the mean of its divisors is an integer number (165655015681).

Almost surely, 2^331310031361 is an apocalyptic number.

It is an amenable number.

331310031361 is a deficient number, since it is larger than the sum of its proper divisors (1).

331310031361 is an equidigital number, since it uses as much as digits as its factorization.

331310031361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 25.

Adding to 331310031361 its reverse (163130013133), we get a palindrome (494440044494).

The spelling of 331310031361 in words is "three hundred thirty-one billion, three hundred ten million, thirty-one thousand, three hundred sixty-one".