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, and also an emirpimes, since its reverse is a distinct semiprime: 31061 = 89 ⋅349.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-16013 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a congruent number.
216013 is an apocalyptic number.
It is an amenable number.
16013 is an equidigital number, since it uses as much as digits as its factorization.
16013 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 306.
The square root of 16013 is about 126.5424829850. The cubic root of 16013 is about 25.2052437228.
Adding to 16013 its reverse (31061), we get a palindrome (47074).
The spelling of 16013 in words is "sixteen thousand, thirteen".