2823 has 4 divisors (see below), whose sum is σ = 3768. Its totient is φ = 1880.

The previous prime is 2819. The next prime is 2833. The reversal of 2823 is 3282.

Added to its reverse (3282) it gives a triangular number (6105 = T₁₁₀).

2823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2823 - 2² = 2819 is a prime.

It is a D-number.

2823 is a lucky number.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2803) 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, 468 + ... + 473.

It is an arithmetic number, because the mean of its divisors is an integer number (942).

2²⁸²³ is an apocalyptic number.

2823 is a deficient number, since it is larger than the sum of its proper divisors (945).

2823 is an equidigital number, since it uses as much as digits as its factorization.

2823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944.

The product of its digits is 96, while the sum is 15.

The square root of 2823 is about 53.1319113151. The cubic root of 2823 is about 14.1330846244.

Adding to 2823 its reverse (3282), we get a triangular number (6105 = T₁₁₀).

The spelling of 2823 in words is "two thousand, eight hundred twenty-three".