1313318899 has 2 divisors, whose sum is σ = 1313318900. Its totient is φ = 1313318898.

The previous prime is 1313318887. The next prime is 1313318921. The reversal of 1313318899 is 9988133131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313318899 - 2⁹ = 1313318387 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313310899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656659449 + 656659450.

It is an arithmetic number, because the mean of its divisors is an integer number (656659450).

Almost surely, 2^1313318899 is an apocalyptic number.

1313318899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313318899 is an equidigital number, since it uses as much as digits as its factorization.

1313318899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 46.

The square root of 1313318899 is about 36239.7419830771. The cubic root of 1313318899 is about 1095.1074445419.

The spelling of 1313318899 in words is "one billion, three hundred thirteen million, three hundred eighteen thousand, eight hundred ninety-nine".