13323131329 has 4 divisors (see below), whose sum is σ = 13541543380. Its totient is φ = 13104719280.

The previous prime is 13323131323. The next prime is 13323131357. The reversal of 13323131329 is 92313132331.

13323131329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92313132331 = 7 ⋅13187590333.

It can be written as a sum of positive squares in 2 ways, for example, as 451775025 + 12871356304 = 21255^2 + 113452^2 .

It is a cyclic number.

It is not a de Polignac number, because 13323131329 - 2⁷ = 13323131201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13323131329.

It is not an unprimeable number, because it can be changed into a prime (13323131323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109205934 + ... + 109206055.

It is an arithmetic number, because the mean of its divisors is an integer number (3385385845).

Almost surely, 2^13323131329 is an apocalyptic number.

It is an amenable number.

13323131329 is a deficient number, since it is larger than the sum of its proper divisors (218412051).

13323131329 is an equidigital number, since it uses as much as digits as its factorization.

13323131329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218412050.

The product of its digits is 8748, while the sum is 31.

The spelling of 13323131329 in words is "thirteen billion, three hundred twenty-three million, one hundred thirty-one thousand, three hundred twenty-nine".