2111311343 has 4 divisors (see below), whose sum is σ = 2111447808. Its totient is φ = 2111174880.

The previous prime is 2111311333. The next prime is 2111311387. The reversal of 2111311343 is 3431131112.

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 2111311343 - 2⁸ = 2111311087 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 (2111311313) 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, 41546 + ... + 77127.

It is an arithmetic number, because the mean of its divisors is an integer number (527861952).

Almost surely, 2^2111311343 is an apocalyptic number.

2111311343 is a deficient number, since it is larger than the sum of its proper divisors (136465).

2111311343 is a wasteful number, since it uses less digits than its factorization.

2111311343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136464.

The product of its digits is 216, while the sum is 20.

The square root of 2111311343 is about 45949.0080741685. The cubic root of 2111311343 is about 1282.8742666514.

Adding to 2111311343 its reverse (3431131112), we get a palindrome (5542442455).

The spelling of 2111311343 in words is "two billion, one hundred eleven million, three hundred eleven thousand, three hundred forty-three".