13011709 has 4 divisors (see below), whose sum is σ = 13019104. Its totient is φ = 13004316.

The previous prime is 13011707. The next prime is 13011763. The reversal of 13011709 is 90711031.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13011709 - 2¹ = 13011707 is a prime.

It is a super-2 number, since 2×13011709² = 338609142201362, which contains 22 as substring.

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 13011709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13011703) 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, 634 + ... + 5140.

It is an arithmetic number, because the mean of its divisors is an integer number (3254776).

Almost surely, 2^13011709 is an apocalyptic number.

It is an amenable number.

13011709 is a deficient number, since it is larger than the sum of its proper divisors (7395).

13011709 is an equidigital number, since it uses as much as digits as its factorization.

13011709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7394.

The product of its (nonzero) digits is 189, while the sum is 22.

The square root of 13011709 is about 3607.1746561540. The cubic root of 13011709 is about 235.2040418903.

The spelling of 13011709 in words is "thirteen million, eleven thousand, seven hundred nine".