12503863 has 2 divisors, whose sum is σ = 12503864. Its totient is φ = 12503862.

The previous prime is 12503861. The next prime is 12503879. The reversal of 12503863 is 36830521.

12503863 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12503863 - 2¹ = 12503861 is a prime.

Together with 12503861, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12503861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6251931 + 6251932.

It is an arithmetic number, because the mean of its divisors is an integer number (6251932).

Almost surely, 2^12503863 is an apocalyptic number.

12503863 is a deficient number, since it is larger than the sum of its proper divisors (1).

12503863 is an equidigital number, since it uses as much as digits as its factorization.

12503863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 12503863 is about 3536.0801744304. The cubic root of 12503863 is about 232.1033464952.

It can be divided in two parts, 12503 and 863, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 12503863 in words is "twelve million, five hundred three thousand, eight hundred sixty-three".