3217718391941 has 2 divisors, whose sum is σ = 3217718391942. Its totient is φ = 3217718391940.

The previous prime is 3217718391913. The next prime is 3217718391959. The reversal of 3217718391941 is 1491938177123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2771988575041 + 445729816900 = 1664929^2 + 667630^2 .

It is a cyclic number.

It is not a de Polignac number, because 3217718391941 - 2¹⁰ = 3217718390917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3217718391961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608859195970 + 1608859195971.

It is an arithmetic number, because the mean of its divisors is an integer number (1608859195971).

Almost surely, 2^{3217718391941} is an apocalyptic number.

It is an amenable number.

3217718391941 is a deficient number, since it is larger than the sum of its proper divisors (1).

3217718391941 is an equidigital number, since it uses as much as digits as its factorization.

3217718391941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 56.

The spelling of 3217718391941 in words is "three trillion, two hundred seventeen billion, seven hundred eighteen million, three hundred ninety-one thousand, nine hundred forty-one".