12513903 has 8 divisors (see below), whose sum is σ = 17073408. Its totient is φ = 8148504.

The previous prime is 12513901. The next prime is 12513923. The reversal of 12513903 is 30931521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12513903 - 2¹ = 12513901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12513901) 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 7 ways as a sum of consecutive naturals, for example, 48375 + ... + 48632.

It is an arithmetic number, because the mean of its divisors is an integer number (2134176).

Almost surely, 2^12513903 is an apocalyptic number.

12513903 is a deficient number, since it is larger than the sum of its proper divisors (4559505).

12513903 is an equidigital number, since it uses as much as digits as its factorization.

12513903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97053.

The product of its (nonzero) digits is 810, while the sum is 24.

The square root of 12513903 is about 3537.4995406360. The cubic root of 12513903 is about 232.1654524797.

It can be divided in two parts, 125 and 13903, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 12513903 in words is "twelve million, five hundred thirteen thousand, nine hundred three".