13312503 has 12 divisors (see below), whose sum is σ = 19328400. Its totient is φ = 8829216.

The previous prime is 13312493. The next prime is 13312517. The reversal of 13312503 is 30521331.

It is not a de Polignac number, because 13312503 - 2⁵ = 13312471 is a prime.

It is a super-2 number, since 2×13312503² = 354445472250018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13312553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1926 + ... + 5507.

It is an arithmetic number, because the mean of its divisors is an integer number (1610700).

Almost surely, 2^13312503 is an apocalyptic number.

13312503 is a deficient number, since it is larger than the sum of its proper divisors (6015897).

13312503 is a wasteful number, since it uses less digits than its factorization.

13312503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7638 (or 7635 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 13312503 is about 3648.6302909448. The cubic root of 13312503 is about 237.0026704821.

Adding to 13312503 its reverse (30521331), we get a palindrome (43833834).

The spelling of 13312503 in words is "thirteen million, three hundred twelve thousand, five hundred three".