2871143 has 4 divisors (see below), whose sum is σ = 3132168. Its totient is φ = 2610120.

The previous prime is 2871139. The next prime is 2871173. The reversal of 2871143 is 3411782.

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 2871143 - 2² = 2871139 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2871133) 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, 130496 + ... + 130517.

It is an arithmetic number, because the mean of its divisors is an integer number (783042).

2^2871143 is an apocalyptic number.

2871143 is a deficient number, since it is larger than the sum of its proper divisors (261025).

2871143 is a wasteful number, since it uses less digits than its factorization.

2871143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261024.

The product of its digits is 1344, while the sum is 26.

The square root of 2871143 is about 1694.4447468124. Note that the first 3 decimals coincide. The cubic root of 2871143 is about 142.1297333188.

The spelling of 2871143 in words is "two million, eight hundred seventy-one thousand, one hundred forty-three".