2103923 has 4 divisors (see below), whose sum is σ = 2107200. Its totient is φ = 2100648.

The previous prime is 2103919. The next prime is 2103953. The reversal of 2103923 is 3293012.

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 2103923 - 2² = 2103919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2103895 and 2103904.

It is not an unprimeable number, because it can be changed into a prime (2103953) 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, 323 + ... + 2076.

It is an arithmetic number, because the mean of its divisors is an integer number (526800).

2^2103923 is an apocalyptic number.

2103923 is a deficient number, since it is larger than the sum of its proper divisors (3277).

2103923 is an equidigital number, since it uses as much as digits as its factorization.

2103923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3276.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 2103923 is about 1450.4906066569. The cubic root of 2103923 is about 128.1376083567.

Adding to 2103923 its reverse (3293012), we get a palindrome (5396935).

The spelling of 2103923 in words is "two million, one hundred three thousand, nine hundred twenty-three".