13613111 has 4 divisors (see below), whose sum is σ = 13641552. Its totient is φ = 13584672.

The previous prime is 13613099. The next prime is 13613137. The reversal of 13613111 is 11131631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11131631 = 7 ⋅1590233.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13613111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13613111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13613711) 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, 13490 + ... + 14463.

It is an arithmetic number, because the mean of its divisors is an integer number (3410388).

Almost surely, 2^13613111 is an apocalyptic number.

13613111 is a deficient number, since it is larger than the sum of its proper divisors (28441).

13613111 is an equidigital number, since it uses as much as digits as its factorization.

13613111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28440.

The product of its digits is 54, while the sum is 17.

The square root of 13613111 is about 3689.5949642203. The cubic root of 13613111 is about 238.7733184465.

Adding to 13613111 its reverse (11131631), we get a palindrome (24744742).

The spelling of 13613111 in words is "thirteen million, six hundred thirteen thousand, one hundred eleven".