1317355847 has 2 divisors, whose sum is σ = 1317355848. Its totient is φ = 1317355846.

The previous prime is 1317355801. The next prime is 1317355873. The reversal of 1317355847 is 7485537131.

It is a strong prime.

It is an emirp because it is prime and its reverse (7485537131) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1317355847 - 2¹⁰ = 1317354823 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1317355798 and 1317355807.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317355877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658677923 + 658677924.

It is an arithmetic number, because the mean of its divisors is an integer number (658677924).

Almost surely, 2^1317355847 is an apocalyptic number.

1317355847 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317355847 is an equidigital number, since it uses as much as digits as its factorization.

1317355847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 352800, while the sum is 44.

The square root of 1317355847 is about 36295.3970497638. The cubic root of 1317355847 is about 1096.2283629034.

The spelling of 1317355847 in words is "one billion, three hundred seventeen million, three hundred fifty-five thousand, eight hundred forty-seven".