Adding to 230521 its reverse (125032), we get a palindrome (355553).
230521 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 an alternating number because its digits alternate between even and odd.
It is a Duffinian number.
It is a congruent number.
2230521 is an apocalyptic number.
230521 is the 340-th centered square number.
It is an amenable number.
230521 is an equidigital number, since it uses as much as digits as its factorization.
230521 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7978.
The square root of 230521 is about 480.1260251226. The cubic root of 230521 is about 61.3154845931.
The spelling of 230521 in words is "two hundred thirty thousand, five hundred twenty-one".