12543203 has 4 divisors (see below), whose sum is σ = 12618480. Its totient is φ = 12467928.

The previous prime is 12543199. The next prime is 12543233. The reversal of 12543203 is 30234521.

It is a happy number.

12543203 is digitally balanced in base 3, 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 not a de Polignac number, because 12543203 - 2² = 12543199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12543233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37388 + ... + 37721.

It is an arithmetic number, because the mean of its divisors is an integer number (3154620).

Almost surely, 2^12543203 is an apocalyptic number.

12543203 is a deficient number, since it is larger than the sum of its proper divisors (75277).

12543203 is an equidigital number, since it uses as much as digits as its factorization.

12543203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75276.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 12543203 is about 3541.6384626328. The cubic root of 12543203 is about 232.3465083176.

Adding to 12543203 its reverse (30234521), we get a palindrome (42777724).

The spelling of 12543203 in words is "twelve million, five hundred forty-three thousand, two hundred three".