1317809383 has 16 divisors (see below), whose sum is σ = 1539298080. Its totient is φ = 1114854400.

The previous prime is 1317809371. The next prime is 1317809401. The reversal of 1317809383 is 3839087131.

It is not a de Polignac number, because 1317809383 - 2⁵ = 1317809351 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 (1317809323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22948 + ... + 56233.

It is an arithmetic number, because the mean of its divisors is an integer number (96206130).

Almost surely, 2^1317809383 is an apocalyptic number.

1317809383 is a deficient number, since it is larger than the sum of its proper divisors (221488697).

1317809383 is a wasteful number, since it uses less digits than its factorization.

1317809383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79298.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 1317809383 is about 36301.6443566955. The cubic root of 1317809383 is about 1096.3541507288.

The spelling of 1317809383 in words is "one billion, three hundred seventeen million, eight hundred nine thousand, three hundred eighty-three".