12303 has 6 divisors (see below), whose sum is σ = 17784.
Its totient is φ = 8196.
The previous prime is 12301. The next prime is 12323. The reversal of 12303 is 30321.
It is a happy number.
It is not a de Polignac number, because 12303 - 21 = 12301 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1367 = 12303 / (1 + 2 + 3 + 0 + 3).
It is an alternating number because its digits alternate between odd and even.
It is a plaindrome in base 14.
It is a zygodrome in base 2.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12301) by changing a digit.
It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 675 + ... + 692.
It is an arithmetic number, because the mean of its divisors is an integer number (2964).
212303 is an apocalyptic number.
12303 is a deficient number, since it is larger than the sum of its proper divisors (5481).
12303 is a wasteful number, since it uses less digits than its factorization.
12303 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1373 (or 1370 counting only the distinct ones).
The product of its (nonzero) digits is 18, while the sum is 9.
The square root of 12303 is about 110.9188892840.
The cubic root of 12303 is about 23.0853789525.
Adding to 12303 its product of nonzero digits (18), we get a palindrome (12321).
Adding to 12303 its reverse (30321), we get a palindrome (42624).
It can be divided in two parts, 1 and 2303, that added together give a square (2304 = 482).
The spelling of 12303 in words is "twelve thousand, three hundred three", and thus it is an iban number.