1313111539 has 2 divisors, whose sum is σ = 1313111540. Its totient is φ = 1313111538.

The previous prime is 1313111519. The next prime is 1313111549. The reversal of 1313111539 is 9351113131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1313111539 - 2⁵ = 1313111507 is a prime.

It is not a weakly prime, because it can be changed into another prime (1313111519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656555769 + 656555770.

It is an arithmetic number, because the mean of its divisors is an integer number (656555770).

Almost surely, 2^1313111539 is an apocalyptic number.

1313111539 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313111539 is an equidigital number, since it uses as much as digits as its factorization.

1313111539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1215, while the sum is 28.

The square root of 1313111539 is about 36236.8809226181. The cubic root of 1313111539 is about 1095.0498059815.

The spelling of 1313111539 in words is "one billion, three hundred thirteen million, one hundred eleven thousand, five hundred thirty-nine".