It is a happy number.
12347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a weak prime.
12347 is a truncatable prime.
It is a cyclic number.
It is a Chen prime.
It is a d-powerful number, because it can be written as 1 + 213 + 32 + 46 + 72 .
It is an alternating number because its digits alternate between odd and even.
It is a plaindrome in base 10 and base 14.
212347 is an apocalyptic number.
12347 is an equidigital number, since it uses as much as digits as its factorization.
12347 is an odious number, because the sum of its binary digits is odd.
The square root of 12347 is about 111.1170553966. The cubic root of 12347 is about 23.1128667785.
Adding to 12347 its reverse (74321), we get a palindrome (86668).
The spelling of 12347 in words is "twelve thousand, three hundred forty-seven", and thus it is an iban number.