2105523023 has 4 divisors (see below), whose sum is σ = 2119654200. Its totient is φ = 2091391848.

The previous prime is 2105522977. The next prime is 2105523037. The reversal of 2105523023 is 3203255012.

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 2105523023 - 2⁶ = 2105522959 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2105523023.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105523053) 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, 7065365 + ... + 7065662.

It is an arithmetic number, because the mean of its divisors is an integer number (529913550).

Almost surely, 2^2105523023 is an apocalyptic number.

2105523023 is a deficient number, since it is larger than the sum of its proper divisors (14131177).

2105523023 is a wasteful number, since it uses less digits than its factorization.

2105523023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14131176.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 2105523023 is about 45885.9785010628. The cubic root of 2105523023 is about 1281.7008279759.

Adding to 2105523023 its reverse (3203255012), we get a palindrome (5308778035).

The spelling of 2105523023 in words is "two billion, one hundred five million, five hundred twenty-three thousand, twenty-three".