231106122 has 112 divisors (see below), whose sum is σ = 570152520. Its totient is φ = 69797376.

The previous prime is 231106111. The next prime is 231106151. The reversal of 231106122 is 221601132.

231106122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 132917841 + 98188281 = 11529^2 + 9909^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 231106095 and 231106104.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1686838 + ... + 1686974.

Almost surely, 2^231106122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231106122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285076260).

231106122 is an abundant number, since it is smaller than the sum of its proper divisors (339046398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231106122 is a wasteful number, since it uses less digits than its factorization.

231106122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259 (or 244 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 231106122 is about 15202.1749101897. The cubic root of 231106122 is about 613.6731895475.

Adding to 231106122 its reverse (221601132), we get a palindrome (452707254).

The spelling of 231106122 in words is "two hundred thirty-one million, one hundred six thousand, one hundred twenty-two".