12871131 has 16 divisors (see below), whose sum is σ = 21122304. Its totient is φ = 6789024.

The previous prime is 12871129. The next prime is 12871181. The reversal of 12871131 is 13117821.

It is a happy number.

It is not a de Polignac number, because 12871131 - 2¹ = 12871129 is a prime.

It is a super-2 number, since 2×12871131² = 331332026438322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12871181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23301 + ... + 23846.

It is an arithmetic number, because the mean of its divisors is an integer number (1320144).

Almost surely, 2^12871131 is an apocalyptic number.

12871131 is a deficient number, since it is larger than the sum of its proper divisors (8251173).

12871131 is a wasteful number, since it uses less digits than its factorization.

12871131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47170.

The product of its digits is 336, while the sum is 24.

The square root of 12871131 is about 3587.6358510863. The cubic root of 12871131 is about 234.3539278477.

Adding to 12871131 its reverse (13117821), we get a palindrome (25988952).

The spelling of 12871131 in words is "twelve million, eight hundred seventy-one thousand, one hundred thirty-one".