331243211310217 has 2 divisors, whose sum is σ = 331243211310218. Its totient is φ = 331243211310216.

The previous prime is 331243211310181. The next prime is 331243211310227. The reversal of 331243211310217 is 712013112342133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280363679236096 + 50879532074121 = 16744064^2 + 7132989^2 .

It is a cyclic number.

It is not a de Polignac number, because 331243211310217 - 2¹¹ = 331243211308169 is a prime.

It is not a weakly prime, because it can be changed into another prime (331243211310227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165621605655108 + 165621605655109.

It is an arithmetic number, because the mean of its divisors is an integer number (165621605655109).

Almost surely, 2^{331243211310217} is an apocalyptic number.

It is an amenable number.

331243211310217 is a deficient number, since it is larger than the sum of its proper divisors (1).

331243211310217 is an equidigital number, since it uses as much as digits as its factorization.

331243211310217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 331243211310217 in words is "three hundred thirty-one trillion, two hundred forty-three billion, two hundred eleven million, three hundred ten thousand, two hundred seventeen".