1317248263 has 8 divisors (see below), whose sum is σ = 1346870448. Its totient is φ = 1287953664.

The previous prime is 1317248243. The next prime is 1317248269. The reversal of 1317248263 is 3628427131.

It is a happy number.

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 1317248263 - 2²¹ = 1315151111 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 (1317248269) 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, 73756 + ... + 89857.

It is an arithmetic number, because the mean of its divisors is an integer number (168358806).

Almost surely, 2^1317248263 is an apocalyptic number.

1317248263 is a deficient number, since it is larger than the sum of its proper divisors (29622185).

1317248263 is an equidigital number, since it uses as much as digits as its factorization.

1317248263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163793.

The product of its digits is 48384, while the sum is 37.

The square root of 1317248263 is about 36293.9149582957. The cubic root of 1317248263 is about 1096.1985203358.

The spelling of 1317248263 in words is "one billion, three hundred seventeen million, two hundred forty-eight thousand, two hundred sixty-three".