12903503 has 2 divisors, whose sum is σ = 12903504. Its totient is φ = 12903502.

The previous prime is 12903497. The next prime is 12903511. The reversal of 12903503 is 30530921.

It is a happy number.

12903503 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.

It is an emirp because it is prime and its reverse (30530921) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12903503 - 2⁶ = 12903439 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12903563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6451751 + 6451752.

It is an arithmetic number, because the mean of its divisors is an integer number (6451752).

Almost surely, 2^12903503 is an apocalyptic number.

12903503 is a deficient number, since it is larger than the sum of its proper divisors (1).

12903503 is an equidigital number, since it uses as much as digits as its factorization.

12903503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 12903503 is about 3592.1446240373. The cubic root of 12903503 is about 234.5502367809.

The spelling of 12903503 in words is "twelve million, nine hundred three thousand, five hundred three".