211311031323 has 48 divisors (see below), whose sum is σ = 345446894880. Its totient is φ = 114385549824.

The previous prime is 211311031307. The next prime is 211311031357. The reversal of 211311031323 is 323130113112.

It is a happy number.

211311031323 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 211311031323 - 2⁴ = 211311031307 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 211311031323.

It is not an unprimeable number, because it can be changed into a prime (211311031303) 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 47 ways as a sum of consecutive naturals, for example, 241690 + ... + 693567.

It is an arithmetic number, because the mean of its divisors is an integer number (7196810310).

Almost surely, 2^211311031323 is an apocalyptic number.

211311031323 is a deficient number, since it is larger than the sum of its proper divisors (134135863557).

211311031323 is a wasteful number, since it uses less digits than its factorization.

211311031323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935356 (or 935349 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 211311031323 its reverse (323130113112), we get a palindrome (534441144435).

The spelling of 211311031323 in words is "two hundred eleven billion, three hundred eleven million, thirty-one thousand, three hundred twenty-three".