13111513 has 8 divisors (see below), whose sum is σ = 13507200. Its totient is φ = 12719520.

The previous prime is 13111493. The next prime is 13111519. The reversal of 13111513 is 31511131.

13111513 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13111513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13111519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7356 + ... + 8962.

It is an arithmetic number, because the mean of its divisors is an integer number (1688400).

Almost surely, 2^13111513 is an apocalyptic number.

It is an amenable number.

13111513 is a deficient number, since it is larger than the sum of its proper divisors (395687).

13111513 is a wasteful number, since it uses less digits than its factorization.

13111513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1847.

The product of its digits is 45, while the sum is 16.

The square root of 13111513 is about 3620.9823252814. The cubic root of 13111513 is about 235.8038744504.

Adding to 13111513 its reverse (31511131), we get a palindrome (44622644).

The spelling of 13111513 in words is "thirteen million, one hundred eleven thousand, five hundred thirteen".