1317717321 has 8 divisors (see below), whose sum is σ = 1758139200. Its totient is φ = 877886832.

The previous prime is 1317717319. The next prime is 1317717337. The reversal of 1317717321 is 1237177131.

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

It is not a de Polignac number, because 1317717321 - 2¹ = 1317717319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1317717391) 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, 142621 + ... + 151578.

It is an arithmetic number, because the mean of its divisors is an integer number (219767400).

Almost surely, 2^1317717321 is an apocalyptic number.

It is an amenable number.

1317717321 is a deficient number, since it is larger than the sum of its proper divisors (440421879).

1317717321 is a wasteful number, since it uses less digits than its factorization.

1317717321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295695.

The product of its digits is 6174, while the sum is 33.

The square root of 1317717321 is about 36300.3763203634. The cubic root of 1317717321 is about 1096.3286197460.

The spelling of 1317717321 in words is "one billion, three hundred seventeen million, seven hundred seventeen thousand, three hundred twenty-one".