2871305 has 4 divisors (see below), whose sum is σ = 3445572. Its totient is φ = 2297040.

The previous prime is 2871293. The next prime is 2871347. The reversal of 2871305 is 5031782.

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

It can be written as a sum of positive squares in 2 ways, for example, as 573049 + 2298256 = 757^2 + 1516^2 .

It is not a de Polignac number, because 2871305 - 2⁴ = 2871289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287126 + ... + 287135.

It is an arithmetic number, because the mean of its divisors is an integer number (861393).

2^2871305 is an apocalyptic number.

It is an amenable number.

2871305 is a deficient number, since it is larger than the sum of its proper divisors (574267).

2871305 is an equidigital number, since it uses as much as digits as its factorization.

2871305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574266.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2871305 is about 1694.4925494082. The cubic root of 2871305 is about 142.1324064219.

The spelling of 2871305 in words is "two million, eight hundred seventy-one thousand, three hundred five".