1313031899 has 2 divisors, whose sum is σ = 1313031900. Its totient is φ = 1313031898.

The previous prime is 1313031883. The next prime is 1313031919. The reversal of 1313031899 is 9981303131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1313031899 - 2⁴ = 1313031883 is a prime.

It is a super-3 number, since 3×1313031899³ (a number of 28 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1315031899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656515949 + 656515950.

It is an arithmetic number, because the mean of its divisors is an integer number (656515950).

Almost surely, 2^1313031899 is an apocalyptic number.

1313031899 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313031899 is an equidigital number, since it uses as much as digits as its factorization.

1313031899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 1313031899 is about 36235.7820255062. The cubic root of 1313031899 is about 1095.0276673368.

The spelling of 1313031899 in words is "one billion, three hundred thirteen million, thirty-one thousand, eight hundred ninety-nine".