13331323129 has 2 divisors, whose sum is σ = 13331323130. Its totient is φ = 13331323128.

The previous prime is 13331323081. The next prime is 13331323151. The reversal of 13331323129 is 92132313331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9579515625 + 3751807504 = 97875^2 + 61252^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13331323129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13331323129.

It is not a weakly prime, because it can be changed into another prime (13331323189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6665661564 + 6665661565.

It is an arithmetic number, because the mean of its divisors is an integer number (6665661565).

Almost surely, 2^13331323129 is an apocalyptic number.

It is an amenable number.

13331323129 is a deficient number, since it is larger than the sum of its proper divisors (1).

13331323129 is an equidigital number, since it uses as much as digits as its factorization.

13331323129 is an evil number, because the sum of its binary digits is even.

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

The spelling of 13331323129 in words is "thirteen billion, three hundred thirty-one million, three hundred twenty-three thousand, one hundred twenty-nine".