211323311213 has 12 divisors (see below), whose sum is σ = 247060389600. Its totient is φ = 180224035992.

The previous prime is 211323311209. The next prime is 211323311321. The reversal of 211323311213 is 312113323112.

It is not a de Polignac number, because 211323311213 - 2² = 211323311209 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 (211323311813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10826231 + ... + 10845732.

It is an arithmetic number, because the mean of its divisors is an integer number (20588365800).

Almost surely, 2^211323311213 is an apocalyptic number.

It is an amenable number.

211323311213 is a deficient number, since it is larger than the sum of its proper divisors (35737078387).

211323311213 is a wasteful number, since it uses less digits than its factorization.

211323311213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21672176 (or 21672169 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 211323311213 its reverse (312113323112), we get a palindrome (523436634325).

The spelling of 211323311213 in words is "two hundred eleven billion, three hundred twenty-three million, three hundred eleven thousand, two hundred thirteen".