13831199 has 4 divisors (see below), whose sum is σ = 13861536. Its totient is φ = 13800864.

The previous prime is 13831163. The next prime is 13831247. The reversal of 13831199 is 99113831.

13831199 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: 99113831 = 23 ⋅4309297.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13831199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13831159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14474 + ... + 15399.

It is an arithmetic number, because the mean of its divisors is an integer number (3465384).

Almost surely, 2^13831199 is an apocalyptic number.

13831199 is a deficient number, since it is larger than the sum of its proper divisors (30337).

13831199 is an equidigital number, since it uses as much as digits as its factorization.

13831199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30336.

The product of its digits is 5832, while the sum is 35.

The square root of 13831199 is about 3719.0319977112. The cubic root of 13831199 is about 240.0416536499.

The spelling of 13831199 in words is "thirteen million, eight hundred thirty-one thousand, one hundred ninety-nine".