2871723 has 4 divisors (see below), whose sum is σ = 3828968. Its totient is φ = 1914480.

The previous prime is 2871721. The next prime is 2871731. The reversal of 2871723 is 3271782.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2871723 - 2¹ = 2871721 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2871721) 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 3 ways as a sum of consecutive naturals, for example, 478618 + ... + 478623.

It is an arithmetic number, because the mean of its divisors is an integer number (957242).

2^2871723 is an apocalyptic number.

2871723 is a deficient number, since it is larger than the sum of its proper divisors (957245).

2871723 is an equidigital number, since it uses as much as digits as its factorization.

2871723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957244.

The product of its digits is 4704, while the sum is 30.

The square root of 2871723 is about 1694.6158856803. The cubic root of 2871723 is about 142.1393032236.

The spelling of 2871723 in words is "two million, eight hundred seventy-one thousand, seven hundred twenty-three".