211144320311 has 4 divisors (see below), whose sum is σ = 216294181824. Its totient is φ = 205994458800.

The previous prime is 211144320263. The next prime is 211144320319. The reversal of 211144320311 is 113023441112.

211144320311 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 211144320311 - 2¹⁴ = 211144303927 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 (211144320319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2574930695 + ... + 2574930776.

It is an arithmetic number, because the mean of its divisors is an integer number (54073545456).

Almost surely, 2^211144320311 is an apocalyptic number.

211144320311 is a deficient number, since it is larger than the sum of its proper divisors (5149861513).

211144320311 is an equidigital number, since it uses as much as digits as its factorization.

211144320311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149861512.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 211144320311 its reverse (113023441112), we get a palindrome (324167761423).

The spelling of 211144320311 in words is "two hundred eleven billion, one hundred forty-four million, three hundred twenty thousand, three hundred eleven".