1317390707 has 8 divisors (see below), whose sum is σ = 1468299600. Its totient is φ = 1174639104.

The previous prime is 1317390667. The next prime is 1317390731. The reversal of 1317390707 is 7070937131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1317390707 - 2⁶ = 1317390643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1317390797) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2038982 + ... + 2039627.

It is an arithmetic number, because the mean of its divisors is an integer number (183537450).

Almost surely, 2^1317390707 is an apocalyptic number.

1317390707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1317390707 is a deficient number, since it is larger than the sum of its proper divisors (150908893).

1317390707 is a wasteful number, since it uses less digits than its factorization.

1317390707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4078645.

The product of its (nonzero) digits is 27783, while the sum is 38.

The square root of 1317390707 is about 36295.8772727703. The cubic root of 1317390707 is about 1096.2380323190.

The spelling of 1317390707 in words is "one billion, three hundred seventeen million, three hundred ninety thousand, seven hundred seven".