12871123 has 4 divisors (see below), whose sum is σ = 12916888. Its totient is φ = 12825360.

The previous prime is 12871109. The next prime is 12871129. The reversal of 12871123 is 32117821.

It is a happy number.

12871123 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, and also an emirpimes, since its reverse is a distinct semiprime: 32117821 = 23 ⋅1396427.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12871123 is a prime.

It is a super-2 number, since 2×12871123² = 331331614562258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12871129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22458 + ... + 23023.

It is an arithmetic number, because the mean of its divisors is an integer number (3229222).

Almost surely, 2^12871123 is an apocalyptic number.

12871123 is a deficient number, since it is larger than the sum of its proper divisors (45765).

12871123 is an equidigital number, since it uses as much as digits as its factorization.

12871123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45764.

The product of its digits is 672, while the sum is 25.

The square root of 12871123 is about 3587.6347361458. The cubic root of 12871123 is about 234.3538792938.

Adding to 12871123 its reverse (32117821), we get a palindrome (44988944).

The spelling of 12871123 in words is "twelve million, eight hundred seventy-one thousand, one hundred twenty-three".