3281 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.
It is a cyclic number.
It is a Duffinian number.
It is a Curzon number.
It is a plaindrome in base 3 and base 9.
It is a nialpdrome in base 8.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 3281.
3281 is a Friedman number, since it can be written as (3^8+1)/2, using all its digits and the basic arithmetic operations.
23281 is an apocalyptic number.
3281 is the 41-st centered square number.
It is an amenable number.
3281 is a wasteful number, since it uses less digits than its factorization.
3281 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 210.
The square root of 3281 is about 57.2800139665. The cubic root of 3281 is about 14.8594274805.
The spelling of 3281 in words is "three thousand, two hundred eighty-one".