331693380810793 has 2 divisors, whose sum is σ = 331693380810794. Its totient is φ = 331693380810792.

The previous prime is 331693380810739. The next prime is 331693380810893. The reversal of 331693380810793 is 397018083396133.

Together with previous prime (331693380810739) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 259520404271769 + 72172976539024 = 16109637^2 + 8495468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331693380810793 is a prime.

It is a super-2 number, since 2×331693380810793² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (331693380810293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165846690405396 + 165846690405397.

It is an arithmetic number, because the mean of its divisors is an integer number (165846690405397).

Almost surely, 2^{331693380810793} is an apocalyptic number.

It is an amenable number.

331693380810793 is a deficient number, since it is larger than the sum of its proper divisors (1).

331693380810793 is an equidigital number, since it uses as much as digits as its factorization.

331693380810793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52907904, while the sum is 64.

The spelling of 331693380810793 in words is "three hundred thirty-one trillion, six hundred ninety-three billion, three hundred eighty million, eight hundred ten thousand, seven hundred ninety-three".