13530213 has 16 divisors (see below), whose sum is σ = 20117760. Its totient is φ = 8987328.

The previous prime is 13530203. The next prime is 13530259. The reversal of 13530213 is 31203531.

13530213 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-13530213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13530203) 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 15 ways as a sum of consecutive naturals, for example, 8356 + ... + 9842.

It is an arithmetic number, because the mean of its divisors is an integer number (1257360).

Almost surely, 2^13530213 is an apocalyptic number.

It is an amenable number.

13530213 is a deficient number, since it is larger than the sum of its proper divisors (6587547).

13530213 is a wasteful number, since it uses less digits than its factorization.

13530213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1833 (or 1827 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 13530213 is about 3678.3437849119. The cubic root of 13530213 is about 238.2876556253.

Adding to 13530213 its reverse (31203531), we get a palindrome (44733744).

The spelling of 13530213 in words is "thirteen million, five hundred thirty thousand, two hundred thirteen".