13319191 has 4 divisors (see below), whose sum is σ = 13545000. Its totient is φ = 13093384.

The previous prime is 13319129. The next prime is 13319203. The reversal of 13319191 is 19191331.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13319191 - 2⁷ = 13319063 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 (13319101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112816 + ... + 112933.

It is an arithmetic number, because the mean of its divisors is an integer number (3386250).

Almost surely, 2^13319191 is an apocalyptic number.

13319191 is a deficient number, since it is larger than the sum of its proper divisors (225809).

13319191 is an equidigital number, since it uses as much as digits as its factorization.

13319191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225808.

The product of its digits is 729, while the sum is 28.

The square root of 13319191 is about 3649.5466841787. The cubic root of 13319191 is about 237.0423526890.

It can be divided in two parts, 1331 and 9191, that multiplied together give a palindrome (12233221).

The spelling of 13319191 in words is "thirteen million, three hundred nineteen thousand, one hundred ninety-one".