1317434887 has 2 divisors, whose sum is σ = 1317434888. Its totient is φ = 1317434886.

The previous prime is 1317434857. The next prime is 1317434893. The reversal of 1317434887 is 7884347131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1317434887 - 2⁷ = 1317434759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1317434857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 658717443 + 658717444.

It is an arithmetic number, because the mean of its divisors is an integer number (658717444).

Almost surely, 2^1317434887 is an apocalyptic number.

1317434887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1317434887 is an equidigital number, since it uses as much as digits as its factorization.

1317434887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 451584, while the sum is 46.

The square root of 1317434887 is about 36296.4858767347. The cubic root of 1317434887 is about 1096.2502866575.

The spelling of 1317434887 in words is "one billion, three hundred seventeen million, four hundred thirty-four thousand, eight hundred eighty-seven".