It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is a Duffinian number.
It is a plaindrome in base 16.
It is a self number, because there is not a number n which added to its sum of digits gives 13213.
It is a congruent number.
213213 is an apocalyptic number.
13213 is the 73-rd heptagonal number.
It is an amenable number.
13213 is an equidigital number, since it uses as much as digits as its factorization.
13213 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 254.
The square root of 13213 is about 114.9478142463. The cubic root of 13213 is about 23.6410708753.
Subtracting from 13213 its sum of digits (10), we obtain a triangular number (13203 = T162).
Adding to 13213 its product of digits (18), we get a palindrome (13231).
Adding to 13213 its reverse (31231), we get a palindrome (44444).
The spelling of 13213 in words is "thirteen thousand, two hundred thirteen".