13111609 has 8 divisors (see below), whose sum is σ = 15050880. Its totient is φ = 11188896.

The previous prime is 13111601. The next prime is 13111619. The reversal of 13111609 is 90611131.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 13111609 - 2³ = 13111601 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 13111609.

It is not an unprimeable number, because it can be changed into a prime (13111601) 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, 2389 + ... + 5650.

It is an arithmetic number, because the mean of its divisors is an integer number (1881360).

Almost surely, 2^13111609 is an apocalyptic number.

It is an amenable number.

13111609 is a deficient number, since it is larger than the sum of its proper divisors (1939271).

13111609 is an equidigital number, since it uses as much as digits as its factorization.

13111609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8279.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 13111609 is about 3620.9955813284. The cubic root of 13111609 is about 235.8044499526.

The spelling of 13111609 in words is "thirteen million, one hundred eleven thousand, six hundred nine".