231031022122 has 32 divisors (see below), whose sum is σ = 352434297600. Its totient is φ = 113566235328.

The previous prime is 231031022107. The next prime is 231031022149. The reversal of 231031022122 is 221220130132.

It is a self number, because there is not a number n which added to its sum of digits gives 231031022122.

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 15 ways as a sum of consecutive naturals, for example, 66597004 + ... + 66600472.

It is an arithmetic number, because the mean of its divisors is an integer number (11013571800).

Almost surely, 2^231031022122 is an apocalyptic number.

231031022122 is a deficient number, since it is larger than the sum of its proper divisors (121403275478).

231031022122 is a wasteful number, since it uses less digits than its factorization.

231031022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5230.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 231031022122 its reverse (221220130132), we get a palindrome (452251152254).

The spelling of 231031022122 in words is "two hundred thirty-one billion, thirty-one million, twenty-two thousand, one hundred twenty-two".