13111613 has 4 divisors (see below), whose sum is σ = 13141920. Its totient is φ = 13081308.

The previous prime is 13111601. The next prime is 13111619. The reversal of 13111613 is 31611131.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13111613 - 2⁴ = 13111597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13111591 and 13111600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13111619) 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, 14495 + ... + 15372.

It is an arithmetic number, because the mean of its divisors is an integer number (3285480).

Almost surely, 2^13111613 is an apocalyptic number.

It is an amenable number.

13111613 is a deficient number, since it is larger than the sum of its proper divisors (30307).

13111613 is an equidigital number, since it uses as much as digits as its factorization.

13111613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30306.

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

The square root of 13111613 is about 3620.9961336627. The cubic root of 13111613 is about 235.8044739318.

Adding to 13111613 its reverse (31611131), we get a palindrome (44722744).

The spelling of 13111613 in words is "thirteen million, one hundred eleven thousand, six hundred thirteen".