2871231 has 16 divisors (see below), whose sum is σ = 4209408. Its totient is φ = 1726400.

The previous prime is 2871227. The next prime is 2871233. The reversal of 2871231 is 1321782.

It is a cyclic number.

It is not a de Polignac number, because 2871231 - 2² = 2871227 is a prime.

It is a super-2 number, since 2×2871231² = 16487934910722, which contains 22 as substring.

2871231 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2871233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5251 + ... + 5771.

It is an arithmetic number, because the mean of its divisors is an integer number (263088).

2^2871231 is an apocalyptic number.

2871231 is a deficient number, since it is larger than the sum of its proper divisors (1338177).

2871231 is a wasteful number, since it uses less digits than its factorization.

2871231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702.

The product of its digits is 672, while the sum is 24.

The square root of 2871231 is about 1694.4707138219. The cubic root of 2871231 is about 142.1311853873.

The spelling of 2871231 in words is "two million, eight hundred seventy-one thousand, two hundred thirty-one".