2311230211 has 2 divisors, whose sum is σ = 2311230212. Its totient is φ = 2311230210.

The previous prime is 2311230209. The next prime is 2311230221. The reversal of 2311230211 is 1120321132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2311230211 - 2¹ = 2311230209 is a prime.

Together with 2311230209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2311230221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155615105 + 1155615106.

It is an arithmetic number, because the mean of its divisors is an integer number (1155615106).

Almost surely, 2^2311230211 is an apocalyptic number.

2311230211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311230211 is an equidigital number, since it uses as much as digits as its factorization.

2311230211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2311230211 is about 48075.2557039482. The cubic root of 2311230211 is about 1322.1510327436.

Adding to 2311230211 its reverse (1120321132), we get a palindrome (3431551343).

The spelling of 2311230211 in words is "two billion, three hundred eleven million, two hundred thirty thousand, two hundred eleven".