211002320311 has 4 divisors (see below), whose sum is σ = 212663756032. Its totient is φ = 209340884592.

The previous prime is 211002320273. The next prime is 211002320317. The reversal of 211002320311 is 113023200112.

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 211002320311 - 2³³ = 202412385719 is a prime.

It is a super-3 number, since 3×211002320311³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002320317) 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, 830717670 + ... + 830717923.

It is an arithmetic number, because the mean of its divisors is an integer number (53165939008).

Almost surely, 2^211002320311 is an apocalyptic number.

211002320311 is a deficient number, since it is larger than the sum of its proper divisors (1661435721).

211002320311 is a wasteful number, since it uses less digits than its factorization.

211002320311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661435720.

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

Adding to 211002320311 its reverse (113023200112), we get a palindrome (324025520423).

The spelling of 211002320311 in words is "two hundred eleven billion, two million, three hundred twenty thousand, three hundred eleven".