13031199 has 10 divisors (see below), whose sum is σ = 19466480. Its totient is φ = 8687412.

The previous prime is 13031189. The next prime is 13031201. The reversal of 13031199 is 99113031.

It is not a de Polignac number, because 13031199 - 2¹¹ = 13029151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13031159) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 80359 + ... + 80520.

It is an arithmetic number, because the mean of its divisors is an integer number (1946648).

Almost surely, 2^13031199 is an apocalyptic number.

13031199 is a deficient number, since it is larger than the sum of its proper divisors (6435281).

13031199 is an equidigital number, since it uses as much as digits as its factorization.

13031199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160891 (or 160882 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 27.

The square root of 13031199 is about 3609.8752055992. The cubic root of 13031199 is about 235.3214192426.

It can be divided in two parts, 130 and 31199, that added together give a square (31329 = 177²).

The spelling of 13031199 in words is "thirteen million, thirty-one thousand, one hundred ninety-nine".