231112222 has 8 divisors (see below), whose sum is σ = 378183672. Its totient is φ = 105051000.

The previous prime is 231112213. The next prime is 231112237. The reversal of 231112222 is 222211132.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 231112196 and 231112205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5252529 + ... + 5252572.

It is an arithmetic number, because the mean of its divisors is an integer number (47272959).

Almost surely, 2^231112222 is an apocalyptic number.

231112222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

231112222 is a deficient number, since it is larger than the sum of its proper divisors (147071450).

231112222 is a wasteful number, since it uses less digits than its factorization.

231112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10505114.

The product of its digits is 96, while the sum is 16.

The square root of 231112222 is about 15202.3755380533. The cubic root of 231112222 is about 613.6785887605.

Adding to 231112222 its reverse (222211132), we get a palindrome (453323354).

The spelling of 231112222 in words is "two hundred thirty-one million, one hundred twelve thousand, two hundred twenty-two".