17313211397 has 2 divisors, whose sum is σ = 17313211398. Its totient is φ = 17313211396.

The previous prime is 17313211319. The next prime is 17313211457. The reversal of 17313211397 is 79311231371.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10949320321 + 6363891076 = 104639^2 + 79774^2 .

It is a cyclic number.

It is not a de Polignac number, because 17313211397 - 2²⁸ = 17044775941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 17313211397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17313213397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8656605698 + 8656605699.

It is an arithmetic number, because the mean of its divisors is an integer number (8656605699).

Almost surely, 2^17313211397 is an apocalyptic number.

It is an amenable number.

17313211397 is a deficient number, since it is larger than the sum of its proper divisors (1).

17313211397 is an equidigital number, since it uses as much as digits as its factorization.

17313211397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23814, while the sum is 38.

The spelling of 17313211397 in words is "seventeen billion, three hundred thirteen million, two hundred eleven thousand, three hundred ninety-seven".