1317775117 has 4 divisors (see below), whose sum is σ = 1318091680. Its totient is φ = 1317458556.

The previous prime is 1317775079. The next prime is 1317775127. The reversal of 1317775117 is 7115777131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7115777131 = 109 ⋅65282359.

It is a cyclic number.

It is not a de Polignac number, because 1317775117 - 2¹¹ = 1317773069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1317775117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317775127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151953 + ... + 160390.

It is an arithmetic number, because the mean of its divisors is an integer number (329522920).

Almost surely, 2^1317775117 is an apocalyptic number.

It is an amenable number.

1317775117 is a deficient number, since it is larger than the sum of its proper divisors (316563).

1317775117 is an equidigital number, since it uses as much as digits as its factorization.

1317775117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316562.

The product of its digits is 36015, while the sum is 40.

The square root of 1317775117 is about 36301.1723915358. The cubic root of 1317775117 is about 1096.3446480907.

The spelling of 1317775117 in words is "one billion, three hundred seventeen million, seven hundred seventy-five thousand, one hundred seventeen".