13307213 has 4 divisors (see below), whose sum is σ = 13315068. Its totient is φ = 13299360.

The previous prime is 13307207. The next prime is 13307227. The reversal of 13307213 is 31270331.

It is a happy number.

13307213 is digitally balanced in base 2, 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 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 7171684 + 6135529 = 2678^2 + 2477^2 .

It is a cyclic number.

It is not a de Polignac number, because 13307213 - 2⁴ = 13307197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13307263) 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, 218 + ... + 5163.

It is an arithmetic number, because the mean of its divisors is an integer number (3328767).

Almost surely, 2^13307213 is an apocalyptic number.

It is an amenable number.

13307213 is a deficient number, since it is larger than the sum of its proper divisors (7855).

13307213 is an equidigital number, since it uses as much as digits as its factorization.

13307213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7854.

The product of its (nonzero) digits is 378, while the sum is 20.

The square root of 13307213 is about 3647.9052893407. The cubic root of 13307213 is about 236.9712736759.

Adding to 13307213 its reverse (31270331), we get a palindrome (44577544).

The spelling of 13307213 in words is "thirteen million, three hundred seven thousand, two hundred thirteen".