Adding to 12320 its reverse (2321), we get a palindrome (14641).
Subtracting from 12320 its reverse (2321), we obtain a palindrome (9999).
12320 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
212320 is an apocalyptic number.
12320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 12320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18144).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
12320 is a wasteful number, since it uses less digits than its factorization.
12320 is an odious number, because the sum of its binary digits is odd.
The square root of 12320 is about 110.9954954041. The cubic root of 12320 is about 23.0960070058.
The spelling of 12320 in words is "twelve thousand, three hundred twenty", and thus it is an iban number.