2103113111 has 4 divisors (see below), whose sum is σ = 2294305224. Its totient is φ = 1911921000.

The previous prime is 2103113011. The next prime is 2103113113. The reversal of 2103113111 is 1113113012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-2103113111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2103113113) 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, 95596040 + ... + 95596061.

It is an arithmetic number, because the mean of its divisors is an integer number (573576306).

Almost surely, 2^2103113111 is an apocalyptic number.

2103113111 is a deficient number, since it is larger than the sum of its proper divisors (191192113).

2103113111 is a wasteful number, since it uses less digits than its factorization.

2103113111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191192112.

The product of its (nonzero) digits is 18, while the sum is 14.

The square root of 2103113111 is about 45859.7111962123. The cubic root of 2103113111 is about 1281.2116438377.

Adding to 2103113111 its reverse (1113113012), we get a palindrome (3216226123).

Subtracting from 2103113111 its reverse (1113113012), we obtain a palindrome (990000099).

The spelling of 2103113111 in words is "two billion, one hundred three million, one hundred thirteen thousand, one hundred eleven".