12387503 has 4 divisors (see below), whose sum is σ = 12395448. Its totient is φ = 12379560.

The previous prime is 12387481. The next prime is 12387517. The reversal of 12387503 is 30578321.

12387503 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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12387503 - 2¹⁴ = 12371119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12380503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776 + ... + 5037.

It is an arithmetic number, because the mean of its divisors is an integer number (3098862).

Almost surely, 2^12387503 is an apocalyptic number.

12387503 is a deficient number, since it is larger than the sum of its proper divisors (7945).

12387503 is an equidigital number, since it uses as much as digits as its factorization.

12387503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7944.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 12387503 is about 3519.5884702618. The cubic root of 12387503 is about 231.3811228126.

The spelling of 12387503 in words is "twelve million, three hundred eighty-seven thousand, five hundred three".