13870503 has 12 divisors (see below), whose sum is σ = 20077408. Its totient is φ = 9227520.

The previous prime is 13870501. The next prime is 13870529. The reversal of 13870503 is 30507831.

It is not a de Polignac number, because 13870503 - 2¹ = 13870501 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 (13870501) 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, 3858 + ... + 6528.

Almost surely, 2^13870503 is an apocalyptic number.

13870503 is a deficient number, since it is larger than the sum of its proper divisors (6206905).

13870503 is a wasteful number, since it uses less digits than its factorization.

13870503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3254 (or 3251 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 13870503 is about 3724.3124197629. The cubic root of 13870503 is about 240.2688133849.

The spelling of 13870503 in words is "thirteen million, eight hundred seventy thousand, five hundred three".