12871331 has 16 divisors (see below), whose sum is σ = 14675040. Its totient is φ = 11182080.

The previous prime is 12871321. The next prime is 12871333. The reversal of 12871331 is 13317821.

It is a cyclic number.

It is not a de Polignac number, because 12871331 - 2²² = 8677027 is a prime.

It is a super-2 number, since 2×12871331² = 331342323423122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12871331.

It is not an unprimeable number, because it can be changed into a prime (12871333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49955 + ... + 50211.

It is an arithmetic number, because the mean of its divisors is an integer number (917190).

Almost surely, 2^12871331 is an apocalyptic number.

12871331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12871331 is a deficient number, since it is larger than the sum of its proper divisors (1803709).

12871331 is a wasteful number, since it uses less digits than its factorization.

12871331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454.

The product of its digits is 1008, while the sum is 26.

The square root of 12871331 is about 3587.6637244870. The cubic root of 12871331 is about 234.3551416893.

The spelling of 12871331 in words is "twelve million, eight hundred seventy-one thousand, three hundred thirty-one".