13311999443 has 2 divisors, whose sum is σ = 13311999444. Its totient is φ = 13311999442.

The previous prime is 13311999377. The next prime is 13311999473. The reversal of 13311999443 is 34499911331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13311999443 - 2¹⁰ = 13311998419 is a prime.

It is not a weakly prime, because it can be changed into another prime (13311999473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6655999721 + 6655999722.

It is an arithmetic number, because the mean of its divisors is an integer number (6655999722).

Almost surely, 2^13311999443 is an apocalyptic number.

13311999443 is a deficient number, since it is larger than the sum of its proper divisors (1).

13311999443 is an equidigital number, since it uses as much as digits as its factorization.

13311999443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 314928, while the sum is 47.

The spelling of 13311999443 in words is "thirteen billion, three hundred eleven million, nine hundred ninety-nine thousand, four hundred forty-three".