1313111519 has 2 divisors, whose sum is σ = 1313111520. Its totient is φ = 1313111518.

The previous prime is 1313111507. The next prime is 1313111539. The reversal of 1313111519 is 9151113131.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1313111519 is a prime.

It is a super-2 number, since 2×1313111519² = 3448523722660974722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1313111539) 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, 656555759 + 656555760.

It is an arithmetic number, because the mean of its divisors is an integer number (656555760).

Almost surely, 2^1313111519 is an apocalyptic number.

1313111519 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313111519 is an equidigital number, since it uses as much as digits as its factorization.

1313111519 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 405, while the sum is 26.

The square root of 1313111519 is about 36236.8806466561. The cubic root of 1313111519 is about 1095.0498004220.

The spelling of 1313111519 in words is "one billion, three hundred thirteen million, one hundred eleven thousand, five hundred nineteen".