231111311122 has 32 divisors (see below), whose sum is σ = 358223500800. Its totient is φ = 111757822848.

The previous prime is 231111311113. The next prime is 231111311141. The reversal of 231111311122 is 221113111132.

It is a self number, because there is not a number n which added to its sum of digits gives 231111311122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15525279 + ... + 15540157.

It is an arithmetic number, because the mean of its divisors is an integer number (11194484400).

Almost surely, 2^231111311122 is an apocalyptic number.

231111311122 is a deficient number, since it is larger than the sum of its proper divisors (127112189678).

231111311122 is a wasteful number, since it uses less digits than its factorization.

231111311122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16690.

The product of its digits is 72, while the sum is 19.

Adding to 231111311122 its reverse (221113111132), we get a palindrome (452224422254).

The spelling of 231111311122 in words is "two hundred thirty-one billion, one hundred eleven million, three hundred eleven thousand, one hundred twenty-two".