331420956917 has 2 divisors, whose sum is σ = 331420956918. Its totient is φ = 331420956916.

The previous prime is 331420956899. The next prime is 331420956961. The reversal of 331420956917 is 719659024133.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 311268031396 + 20152925521 = 557914^2 + 141961^2 .

It is a cyclic number.

It is not a de Polignac number, because 331420956917 - 2¹⁰ = 331420955893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331420956017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165710478458 + 165710478459.

It is an arithmetic number, because the mean of its divisors is an integer number (165710478459).

Almost surely, 2^331420956917 is an apocalyptic number.

It is an amenable number.

331420956917 is a deficient number, since it is larger than the sum of its proper divisors (1).

331420956917 is an equidigital number, since it uses as much as digits as its factorization.

331420956917 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 331420956917 in words is "three hundred thirty-one billion, four hundred twenty million, nine hundred fifty-six thousand, nine hundred seventeen".