1317427710309 has 12 divisors (see below), whose sum is σ = 1905830043052. Its totient is φ = 876956414400.

The previous prime is 1317427710299. The next prime is 1317427710311. The reversal of 1317427710309 is 9030177247131.

1317427710309 is a `hidden beast` number, since 1 + 3 + 1 + 74 + 277 + 1 + 0 + 309 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1172953980900 + 144473729409 = 1083030^2 + 380097^2 .

It is not a de Polignac number, because 1317427710309 - 2⁴ = 1317427710293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317427010309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110720872 + ... + 110732769.

Almost surely, 2^{1317427710309} is an apocalyptic number.

It is an amenable number.

1317427710309 is a deficient number, since it is larger than the sum of its proper divisors (588402332743).

1317427710309 is a wasteful number, since it uses less digits than its factorization.

1317427710309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221454308 (or 221454305 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The spelling of 1317427710309 in words is "one trillion, three hundred seventeen billion, four hundred twenty-seven million, seven hundred ten thousand, three hundred nine".