1317583823 has 8 divisors (see below), whose sum is σ = 1387340400. Its totient is φ = 1247868288.

The previous prime is 1317583807. The next prime is 1317583867. The reversal of 1317583823 is 3283857131.

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 1317583823 - 2⁴ = 1317583807 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 (1317583123) 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, 73073 + ... + 89301.

It is an arithmetic number, because the mean of its divisors is an integer number (173417550).

Almost surely, 2^1317583823 is an apocalyptic number.

1317583823 is a deficient number, since it is larger than the sum of its proper divisors (69756577).

1317583823 is a wasteful number, since it uses less digits than its factorization.

1317583823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20521.

The product of its digits is 120960, while the sum is 41.

The square root of 1317583823 is about 36298.5374774246. The cubic root of 1317583823 is about 1096.2915954620.

The spelling of 1317583823 in words is "one billion, three hundred seventeen million, five hundred eighty-three thousand, eight hundred twenty-three".