2871211 has 4 divisors (see below), whose sum is σ = 3281392. Its totient is φ = 2461032.

The previous prime is 2871199. The next prime is 2871221. The reversal of 2871211 is 1121782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1121782 = 2 ⋅560891.

It is not a de Polignac number, because 2871211 - 2¹³ = 2863019 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 (2871221) 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, 205080 + ... + 205093.

It is an arithmetic number, because the mean of its divisors is an integer number (820348).

2^2871211 is an apocalyptic number.

2871211 is a deficient number, since it is larger than the sum of its proper divisors (410181).

2871211 is an equidigital number, since it uses as much as digits as its factorization.

2871211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410180.

The product of its digits is 224, while the sum is 22.

The square root of 2871211 is about 1694.4648122637. The cubic root of 2871211 is about 142.1308553744.

Adding to 2871211 its reverse (1121782), we get a palindrome (3992993).

The spelling of 2871211 in words is "two million, eight hundred seventy-one thousand, two hundred eleven".