12871115 has 4 divisors (see below), whose sum is σ = 15445344. Its totient is φ = 10296888.

The previous prime is 12871109. The next prime is 12871129. The reversal of 12871115 is 51117821.

12871115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12871115 - 2⁶ = 12871051 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287107 + ... + 1287116.

It is an arithmetic number, because the mean of its divisors is an integer number (3861336).

Almost surely, 2^12871115 is an apocalyptic number.

12871115 is a deficient number, since it is larger than the sum of its proper divisors (2574229).

12871115 is an equidigital number, since it uses as much as digits as its factorization.

12871115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2574228.

The product of its digits is 560, while the sum is 26.

The square root of 12871115 is about 3587.6336212049. The cubic root of 12871115 is about 234.3538307399.

Adding to 12871115 its reverse (51117821), we get a palindrome (63988936).

The spelling of 12871115 in words is "twelve million, eight hundred seventy-one thousand, one hundred fifteen".