331121332210993 has 2 divisors, whose sum is σ = 331121332210994. Its totient is φ = 331121332210992.

The previous prime is 331121332210979. The next prime is 331121332211011. The reversal of 331121332210993 is 399012233121133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287343418756849 + 43777913454144 = 16951207^2 + 6616488^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-331121332210993 is a prime.

It is not a weakly prime, because it can be changed into another prime (331121332210093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165560666105496 + 165560666105497.

It is an arithmetic number, because the mean of its divisors is an integer number (165560666105497).

Almost surely, 2^{331121332210993} is an apocalyptic number.

It is an amenable number.

331121332210993 is a deficient number, since it is larger than the sum of its proper divisors (1).

331121332210993 is an equidigital number, since it uses as much as digits as its factorization.

331121332210993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 43.

The spelling of 331121332210993 in words is "three hundred thirty-one trillion, one hundred twenty-one billion, three hundred thirty-two million, two hundred ten thousand, nine hundred ninety-three".