2111322311 has 4 divisors (see below), whose sum is σ = 2412939792. Its totient is φ = 1809704832.

The previous prime is 2111322271. The next prime is 2111322319. The reversal of 2111322311 is 1132231112.

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 2111322311 - 2²² = 2107128007 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 2111322311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111322319) 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, 150808730 + ... + 150808743.

It is an arithmetic number, because the mean of its divisors is an integer number (603234948).

Almost surely, 2^2111322311 is an apocalyptic number.

2111322311 is a deficient number, since it is larger than the sum of its proper divisors (301617481).

2111322311 is an equidigital number, since it uses as much as digits as its factorization.

2111322311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301617480.

The product of its digits is 72, while the sum is 17.

The square root of 2111322311 is about 45949.1274237063. The cubic root of 2111322311 is about 1282.8764881050.

Adding to 2111322311 its reverse (1132231112), we get a palindrome (3243553423).

The spelling of 2111322311 in words is "two billion, one hundred eleven million, three hundred twenty-two thousand, three hundred eleven".