2881723 has 4 divisors (see below), whose sum is σ = 3103408. Its totient is φ = 2660040.

The previous prime is 2881717. The next prime is 2881727. The reversal of 2881723 is 3271882.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2881723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2881727) 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, 110823 + ... + 110848.

It is an arithmetic number, because the mean of its divisors is an integer number (775852).

2^2881723 is an apocalyptic number.

2881723 is a deficient number, since it is larger than the sum of its proper divisors (221685).

2881723 is a wasteful number, since it uses less digits than its factorization.

2881723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221684.

The product of its digits is 5376, while the sum is 31.

The square root of 2881723 is about 1697.5638426875. The cubic root of 2881723 is about 142.3040993343.

The spelling of 2881723 in words is "two million, eight hundred eighty-one thousand, seven hundred twenty-three".