13587213 has 4 divisors (see below), whose sum is σ = 18116288. Its totient is φ = 9058140.

The previous prime is 13587209. The next prime is 13587221. The reversal of 13587213 is 31278531.

13587213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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.

It is not a de Polignac number, because 13587213 - 2² = 13587209 is a prime.

It is a super-2 number, since 2×13587213² = 369224714214738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13587263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2264533 + ... + 2264538.

It is an arithmetic number, because the mean of its divisors is an integer number (4529072).

Almost surely, 2^13587213 is an apocalyptic number.

It is an amenable number.

13587213 is a deficient number, since it is larger than the sum of its proper divisors (4529075).

13587213 is an equidigital number, since it uses as much as digits as its factorization.

13587213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4529074.

The product of its digits is 5040, while the sum is 30.

The square root of 13587213 is about 3686.0836941122. The cubic root of 13587213 is about 238.6218057629.

The spelling of 13587213 in words is "thirteen million, five hundred eighty-seven thousand, two hundred thirteen".