Adding to 2321 its reverse (1232), we get a palindrome (3553).
Subtracting from 2321 its reverse (1232), we obtain a square (1089 = 332).
2321 is nontrivially palindromic in base 14.
2321 is an esthetic number in base 4 and base 10, because in such bases its adjacent digits differ by 1.
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 Curzon number.
2321 is a nontrivial repdigit in base 14.
It is a plaindrome in base 14.
It is a nialpdrome in base 8, base 14 and base 16.
It is a zygodrome in base 14.
22321 is an apocalyptic number.
It is an amenable number.
2321 is a wasteful number, since it uses less digits than its factorization.
2321 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 222.
The square root of 2321 is about 48.1767578818. The cubic root of 2321 is about 13.2401136648.
The spelling of 2321 in words is "two thousand, three hundred twenty-one", and thus it is an iban number.