2102113243 has 4 divisors (see below), whose sum is σ = 2107841440. Its totient is φ = 2096385048.

The previous prime is 2102113219. The next prime is 2102113261. The reversal of 2102113243 is 3423112012.

It is a happy number.

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 2102113243 - 2¹⁷ = 2101982171 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 2102113243.

It is not an unprimeable number, because it can be changed into a prime (2102113043) 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, 2863548 + ... + 2864281.

It is an arithmetic number, because the mean of its divisors is an integer number (526960360).

Almost surely, 2^2102113243 is an apocalyptic number.

2102113243 is a deficient number, since it is larger than the sum of its proper divisors (5728197).

2102113243 is an equidigital number, since it uses as much as digits as its factorization.

2102113243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5728196.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 2102113243 is about 45848.8085232321. The cubic root of 2102113243 is about 1281.0085725616.

Adding to 2102113243 its reverse (3423112012), we get a palindrome (5525225255).

The spelling of 2102113243 in words is "two billion, one hundred two million, one hundred thirteen thousand, two hundred forty-three".