13311609 has 16 divisors (see below), whose sum is σ = 19329600. Its totient is φ = 8116416.

The previous prime is 13311589. The next prime is 13311611. The reversal of 13311609 is 90611331.

It is not a de Polignac number, because 13311609 - 2⁹ = 13311097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13311619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2374 + ... + 5679.

It is an arithmetic number, because the mean of its divisors is an integer number (1208100).

Almost surely, 2^13311609 is an apocalyptic number.

13311609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

13311609 is a deficient number, since it is larger than the sum of its proper divisors (6017991).

13311609 is a wasteful number, since it uses less digits than its factorization.

13311609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8104.

The product of its (nonzero) digits is 486, while the sum is 24.

The square root of 13311609 is about 3648.5077771604. The cubic root of 13311609 is about 236.9973650653.

The spelling of 13311609 in words is "thirteen million, three hundred eleven thousand, six hundred nine".