12103603 has 2 divisors, whose sum is σ = 12103604. Its totient is φ = 12103602.

The previous prime is 12103591. The next prime is 12103613. The reversal of 12103603 is 30630121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12103603 is a prime.

It is not a weakly prime, because it can be changed into another prime (12103613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6051801 + 6051802.

It is an arithmetic number, because the mean of its divisors is an integer number (6051802).

Almost surely, 2^12103603 is an apocalyptic number.

12103603 is a deficient number, since it is larger than the sum of its proper divisors (1).

12103603 is an equidigital number, since it uses as much as digits as its factorization.

12103603 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 12103603 is about 3479.0232824746. The cubic root of 12103603 is about 229.5998271496.

Adding to 12103603 its reverse (30630121), we get a palindrome (42733724).

The spelling of 12103603 in words is "twelve million, one hundred three thousand, six hundred three".