2111351311 has 4 divisors (see below), whose sum is σ = 2111559912. Its totient is φ = 2111142712.

The previous prime is 2111351287. The next prime is 2111351327. The reversal of 2111351311 is 1131531112.

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 2111351311 - 2⁵ = 2111351279 is a prime.

It is a super-2 number, since 2×2111351311² = 8915608716922837442, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111351381) 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, 88300 + ... + 109633.

It is an arithmetic number, because the mean of its divisors is an integer number (527889978).

Almost surely, 2^2111351311 is an apocalyptic number.

2111351311 is a deficient number, since it is larger than the sum of its proper divisors (208601).

2111351311 is a wasteful number, since it uses less digits than its factorization.

2111351311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208600.

The product of its digits is 90, while the sum is 19.

The square root of 2111351311 is about 45949.4429890070. The cubic root of 2111351311 is about 1282.8823617144.

Adding to 2111351311 its reverse (1131531112), we get a palindrome (3242882423).

The spelling of 2111351311 in words is "two billion, one hundred eleven million, three hundred fifty-one thousand, three hundred eleven".