13871503 has 2 divisors, whose sum is σ = 13871504. Its totient is φ = 13871502.

The previous prime is 13871491. The next prime is 13871513. The reversal of 13871503 is 30517831.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13871503 - 2⁵ = 13871471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13871513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6935751 + 6935752.

It is an arithmetic number, because the mean of its divisors is an integer number (6935752).

Almost surely, 2^13871503 is an apocalyptic number.

13871503 is a deficient number, since it is larger than the sum of its proper divisors (1).

13871503 is an equidigital number, since it uses as much as digits as its factorization.

13871503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 13871503 is about 3724.4466703122. The cubic root of 13871503 is about 240.2745873414.

The spelling of 13871503 in words is "thirteen million, eight hundred seventy-one thousand, five hundred three".