1317351399 has 32 divisors (see below), whose sum is σ = 2166743040. Its totient is φ = 693280512.

The previous prime is 1317351379. The next prime is 1317351407. The reversal of 1317351399 is 9931537131.

It is not a de Polignac number, because 1317351399 - 2¹² = 1317347303 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1317351399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1317351359) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 119482 + ... + 130040.

It is an arithmetic number, because the mean of its divisors is an integer number (67710720).

Almost surely, 2^1317351399 is an apocalyptic number.

1317351399 is a deficient number, since it is larger than the sum of its proper divisors (849391641).

1317351399 is a wasteful number, since it uses less digits than its factorization.

1317351399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11039.

The product of its digits is 76545, while the sum is 42.

The square root of 1317351399 is about 36295.3357747246. The cubic root of 1317351399 is about 1096.2271291114.

The spelling of 1317351399 in words is "one billion, three hundred seventeen million, three hundred fifty-one thousand, three hundred ninety-nine".