13231199999 has 16 divisors (see below), whose sum is σ = 13747674240. Its totient is φ = 12726473760.

The previous prime is 13231199987. The next prime is 13231200019. The reversal of 13231199999 is 99999113231.

It is a cyclic number.

It is not a de Polignac number, because 13231199999 - 2⁴ = 13231199983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231199929) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 740432 + ... + 758090.

It is an arithmetic number, because the mean of its divisors is an integer number (859229640).

Almost surely, 2^13231199999 is an apocalyptic number.

13231199999 is a deficient number, since it is larger than the sum of its proper divisors (516474241).

13231199999 is a wasteful number, since it uses less digits than its factorization.

13231199999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17990.

The product of its digits is 1062882, while the sum is 56.

The spelling of 13231199999 in words is "thirteen billion, two hundred thirty-one million, one hundred ninety-nine thousand, nine hundred ninety-nine".