13391319 has 4 divisors (see below), whose sum is σ = 17855096. Its totient is φ = 8927544.

The previous prime is 13391311. The next prime is 13391321. The reversal of 13391319 is 91319331.

It is a happy number.

13391319 is digitally balanced in base 3, 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: 91319331 = 3 ⋅30439777.

It is not a de Polignac number, because 13391319 - 2³ = 13391311 is a prime.

It is a super-2 number, since 2×13391319² = 358654849119522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13391311) 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, 2231884 + ... + 2231889.

It is an arithmetic number, because the mean of its divisors is an integer number (4463774).

Almost surely, 2^13391319 is an apocalyptic number.

13391319 is a deficient number, since it is larger than the sum of its proper divisors (4463777).

13391319 is an equidigital number, since it uses as much as digits as its factorization.

13391319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4463776.

The product of its digits is 2187, while the sum is 30.

The square root of 13391319 is about 3659.4151172011. The cubic root of 13391319 is about 237.4694712375.

The spelling of 13391319 in words is "thirteen million, three hundred ninety-one thousand, three hundred nineteen".