2102823 has 12 divisors (see below), whose sum is σ = 3135808. Its totient is φ = 1356480.

The previous prime is 2102809. The next prime is 2102831. The reversal of 2102823 is 3282012.

It is a happy number.

It is not a de Polignac number, because 2102823 - 2⁵ = 2102791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102796 and 2102805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3490 + ... + 4047.

2^2102823 is an apocalyptic number.

2102823 is a deficient number, since it is larger than the sum of its proper divisors (1032985).

2102823 is a wasteful number, since it uses less digits than its factorization.

2102823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7574 (or 7571 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2102823 is about 1450.1113750330. Note that the first 3 decimals coincide. The cubic root of 2102823 is about 128.1152729479.

Adding to 2102823 its reverse (3282012), we get a palindrome (5384835).

The spelling of 2102823 in words is "two million, one hundred two thousand, eight hundred twenty-three".