211231111323 has 16 divisors (see below), whose sum is σ = 283788709920. Its totient is φ = 139751202816.

The previous prime is 211231111321. The next prime is 211231111363. The reversal of 211231111323 is 323111132112.

It is not a de Polignac number, because 211231111323 - 2¹ = 211231111321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211231111323.

It is not an unprimeable number, because it can be changed into a prime (211231111321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 301840 + ... + 716637.

It is an arithmetic number, because the mean of its divisors is an integer number (17736794370).

Almost surely, 2^211231111323 is an apocalyptic number.

211231111323 is a deficient number, since it is larger than the sum of its proper divisors (72557598597).

211231111323 is a wasteful number, since it uses less digits than its factorization.

211231111323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019006.

The product of its digits is 216, while the sum is 21.

Adding to 211231111323 its reverse (323111132112), we get a palindrome (534342243435).

The spelling of 211231111323 in words is "two hundred eleven billion, two hundred thirty-one million, one hundred eleven thousand, three hundred twenty-three".