1317274613 has 2 divisors, whose sum is σ = 1317274614. Its totient is φ = 1317274612.

The previous prime is 1317274559. The next prime is 1317274649. The reversal of 1317274613 is 3164727131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050213649 + 267060964 = 32407^2 + 16342^2 .

It is a cyclic number.

It is not a de Polignac number, because 1317274613 - 2⁶ = 1317274549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317274663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658637306 + 658637307.

It is an arithmetic number, because the mean of its divisors is an integer number (658637307).

Almost surely, 2^1317274613 is an apocalyptic number.

It is an amenable number.

1317274613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317274613 is an equidigital number, since it uses as much as digits as its factorization.

1317274613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 35.

The square root of 1317274613 is about 36294.2779649906. The cubic root of 1317274613 is about 1096.2058296738.

The spelling of 1317274613 in words is "one billion, three hundred seventeen million, two hundred seventy-four thousand, six hundred thirteen".