2143240011 has 12 divisors (see below), whose sum is σ = 3377226840. Its totient is φ = 1298933280.

The previous prime is 2143240007. The next prime is 2143240037. The reversal of 2143240011 is 1100423412.

It is not a de Polignac number, because 2143240011 - 2² = 2143240007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2143240051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10824346 + ... + 10824543.

It is an arithmetic number, because the mean of its divisors is an integer number (281435570).

Almost surely, 2^2143240011 is an apocalyptic number.

2143240011 is a deficient number, since it is larger than the sum of its proper divisors (1233986829).

2143240011 is a wasteful number, since it uses less digits than its factorization.

2143240011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21648906 (or 21648903 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2143240011 is about 46295.1402525146. The cubic root of 2143240011 is about 1289.3087679501.

Adding to 2143240011 its reverse (1100423412), we get a palindrome (3243663423).

The spelling of 2143240011 in words is "two billion, one hundred forty-three million, two hundred forty thousand, eleven".