13231039399 has 2 divisors, whose sum is σ = 13231039400. Its totient is φ = 13231039398.

The previous prime is 13231039397. The next prime is 13231039421. The reversal of 13231039399 is 99393013231.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13231039399 - 2¹ = 13231039397 is a prime.

Together with 13231039397, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13231039397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6615519699 + 6615519700.

It is an arithmetic number, because the mean of its divisors is an integer number (6615519700).

Almost surely, 2^13231039399 is an apocalyptic number.

13231039399 is a deficient number, since it is larger than the sum of its proper divisors (1).

13231039399 is an equidigital number, since it uses as much as digits as its factorization.

13231039399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118098, while the sum is 43.

The spelling of 13231039399 in words is "thirteen billion, two hundred thirty-one million, thirty-nine thousand, three hundred ninety-nine".