12503803 has 12 divisors (see below), whose sum is σ = 13640088. Its totient is φ = 11456640.

The previous prime is 12503797. The next prime is 12503831. The reversal of 12503803 is 30830521.

It is not a de Polignac number, because 12503803 - 2²¹ = 10406651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12503863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40576 + ... + 40882.

It is an arithmetic number, because the mean of its divisors is an integer number (1136674).

Almost surely, 2^12503803 is an apocalyptic number.

12503803 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

12503803 is a deficient number, since it is larger than the sum of its proper divisors (1136285).

12503803 is a wasteful number, since it uses less digits than its factorization.

12503803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 12503803 is about 3536.0716904497. The cubic root of 12503803 is about 232.1029752440.

The spelling of 12503803 in words is "twelve million, five hundred three thousand, eight hundred three".