1317399075 has 18 divisors (see below), whose sum is σ = 2359608524. Its totient is φ = 702612720.

The previous prime is 1317399053. The next prime is 1317399079. The reversal of 1317399075 is 5709937131.

It is not a de Polignac number, because 1317399075 - 2⁵ = 1317399043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 1317399075.

It is not an unprimeable number, because it can be changed into a prime (1317399079) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2927329 + ... + 2927778.

Almost surely, 2^1317399075 is an apocalyptic number.

1317399075 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1317399075 is a deficient number, since it is larger than the sum of its proper divisors (1042209449).

1317399075 is a wasteful number, since it uses less digits than its factorization.

1317399075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5855123 (or 5855115 counting only the distinct ones).

The product of its (nonzero) digits is 178605, while the sum is 45.

The square root of 1317399075 is about 36295.9925473874. The cubic root of 1317399075 is about 1096.2403533972.

The spelling of 1317399075 in words is "one billion, three hundred seventeen million, three hundred ninety-nine thousand, seventy-five".