2131443211 has 4 divisors (see below), whose sum is σ = 2144206512. Its totient is φ = 2118679912.

The previous prime is 2131443173. The next prime is 2131443227. The reversal of 2131443211 is 1123441312.

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 2131443211 - 2⁹ = 2131442699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2131443911) 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, 6381400 + ... + 6381733.

It is an arithmetic number, because the mean of its divisors is an integer number (536051628).

Almost surely, 2^2131443211 is an apocalyptic number.

2131443211 is a deficient number, since it is larger than the sum of its proper divisors (12763301).

2131443211 is a wasteful number, since it uses less digits than its factorization.

2131443211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12763300.

The product of its digits is 576, while the sum is 22.

The square root of 2131443211 is about 46167.5558265759. Note that the first 3 decimals coincide. The cubic root of 2131443211 is about 1286.9388810862.

Adding to 2131443211 its reverse (1123441312), we get a palindrome (3254884523).

The spelling of 2131443211 in words is "two billion, one hundred thirty-one million, four hundred forty-three thousand, two hundred eleven".