1317522397 has 2 divisors, whose sum is σ = 1317522398. Its totient is φ = 1317522396.

The previous prime is 1317522391. The next prime is 1317522439. The reversal of 1317522397 is 7932257131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1251815161 + 65707236 = 35381^2 + 8106^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317522397 - 2¹⁵ = 1317489629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317522391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658761198 + 658761199.

It is an arithmetic number, because the mean of its divisors is an integer number (658761199).

Almost surely, 2^1317522397 is an apocalyptic number.

It is an amenable number.

1317522397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317522397 is an equidigital number, since it uses as much as digits as its factorization.

1317522397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 1317522397 is about 36297.6913453184. The cubic root of 1317522397 is about 1096.2745587587.

The spelling of 1317522397 in words is "one billion, three hundred seventeen million, five hundred twenty-two thousand, three hundred ninety-seven".