1351217717 has 2 divisors, whose sum is σ = 1351217718. Its totient is φ = 1351217716.

The previous prime is 1351217641. The next prime is 1351217719. The reversal of 1351217717 is 7177121531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1350856516 + 361201 = 36754^2 + 601^2 .

It is an emirp because it is prime and its reverse (7177121531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1351217717 - 2²⁴ = 1334440501 is a prime.

Together with 1351217719, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1351217719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 675608858 + 675608859.

It is an arithmetic number, because the mean of its divisors is an integer number (675608859).

Almost surely, 2^1351217717 is an apocalyptic number.

It is an amenable number.

1351217717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1351217717 is an equidigital number, since it uses as much as digits as its factorization.

1351217717 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10290, while the sum is 35.

The square root of 1351217717 is about 36758.9134360634. The cubic root of 1351217717 is about 1105.5416540083.

The spelling of 1351217717 in words is "one billion, three hundred fifty-one million, two hundred seventeen thousand, seven hundred seventeen".