12188713 has 4 divisors (see below), whose sum is σ = 12196548. Its totient is φ = 12180880.

The previous prime is 12188699. The next prime is 12188717. The reversal of 12188713 is 31788121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 6953769 + 5234944 = 2637^2 + 2288^2 .

It is a cyclic number.

It is not a de Polignac number, because 12188713 - 2⁵ = 12188681 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12188717) 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, 706 + ... + 4987.

It is an arithmetic number, because the mean of its divisors is an integer number (3049137).

Almost surely, 2^12188713 is an apocalyptic number.

It is an amenable number.

12188713 is a deficient number, since it is larger than the sum of its proper divisors (7835).

12188713 is an equidigital number, since it uses as much as digits as its factorization.

12188713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7834.

The product of its digits is 2688, while the sum is 31.

The square root of 12188713 is about 3491.2337360881. The cubic root of 12188713 is about 230.1367365884.

The spelling of 12188713 in words is "twelve million, one hundred eighty-eight thousand, seven hundred thirteen".