211302031211 has 8 divisors (see below), whose sum is σ = 211441429584. Its totient is φ = 211162682880.

The previous prime is 211302031207. The next prime is 211302031217. The reversal of 211302031211 is 112130203112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211302031211 - 2² = 211302031207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211302031211.

It is not an unprimeable number, because it can be changed into a prime (211302031217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11801576 + ... + 11819466.

It is an arithmetic number, because the mean of its divisors is an integer number (26430178698).

Almost surely, 2^211302031211 is an apocalyptic number.

211302031211 is a deficient number, since it is larger than the sum of its proper divisors (139398373).

211302031211 is a wasteful number, since it uses less digits than its factorization.

211302031211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25021.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 211302031211 its reverse (112130203112), we get a palindrome (323432234323).

The spelling of 211302031211 in words is "two hundred eleven billion, three hundred two million, thirty-one thousand, two hundred eleven".