2111310111 has 4 divisors (see below), whose sum is σ = 2815080152. Its totient is φ = 1407540072.

The previous prime is 2111310109. The next prime is 2111310127. The reversal of 2111310111 is 1110131112.

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

It is not a de Polignac number, because 2111310111 - 2¹ = 2111310109 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 (2111310181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351885016 + ... + 351885021.

It is an arithmetic number, because the mean of its divisors is an integer number (703770038).

Almost surely, 2^2111310111 is an apocalyptic number.

2111310111 is a deficient number, since it is larger than the sum of its proper divisors (703770041).

2111310111 is an equidigital number, since it uses as much as digits as its factorization.

2111310111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703770040.

The product of its (nonzero) digits is 6, while the sum is 12.

The square root of 2111310111 is about 45948.9946680012. The cubic root of 2111310111 is about 1282.8740171222.

Adding to 2111310111 its reverse (1110131112), we get a palindrome (3221441223).

The spelling of 2111310111 in words is "two billion, one hundred eleven million, three hundred ten thousand, one hundred eleven".