13378111 has 4 divisors (see below), whose sum is σ = 13959792. Its totient is φ = 12796432.

The previous prime is 13378067. The next prime is 13378153. The reversal of 13378111 is 11187331.

13378111 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.

It is a cyclic number.

It is not a de Polignac number, because 13378111 - 2¹¹ = 13376063 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 (13378171) 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, 290806 + ... + 290851.

It is an arithmetic number, because the mean of its divisors is an integer number (3489948).

Almost surely, 2^13378111 is an apocalyptic number.

13378111 is a deficient number, since it is larger than the sum of its proper divisors (581681).

13378111 is an equidigital number, since it uses as much as digits as its factorization.

13378111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581680.

The product of its digits is 504, while the sum is 25.

The square root of 13378111 is about 3657.6100120160. The cubic root of 13378111 is about 237.3913726691.

The spelling of 13378111 in words is "thirteen million, three hundred seventy-eight thousand, one hundred eleven".