231131122 has 8 divisors (see below), whose sum is σ = 346864896. Its totient is φ = 115509492.

The previous prime is 231131111. The next prime is 231131123. The reversal of 231131122 is 221131132.

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 = 231131096 and 231131105.

It is not an unprimeable number, because it can be changed into a prime (231131123) by changing a digit.

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, 22678 + ... + 31249.

It is an arithmetic number, because the mean of its divisors is an integer number (43358112).

Almost surely, 2^231131122 is an apocalyptic number.

231131122 is a deficient number, since it is larger than the sum of its proper divisors (115733774).

231131122 is a wasteful number, since it uses less digits than its factorization.

231131122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56072.

The product of its digits is 72, while the sum is 16.

The square root of 231131122 is about 15202.9971387224. The cubic root of 231131122 is about 613.6953168664.

Adding to 231131122 its reverse (221131132), we get a palindrome (452262254).

It can be divided in two parts, 2311 and 31122, that added together give a palindrome (33433).

The spelling of 231131122 in words is "two hundred thirty-one million, one hundred thirty-one thousand, one hundred twenty-two".