231115122 has 48 divisors (see below), whose sum is σ = 573131520. Its totient is φ = 65935296.

The previous prime is 231115097. The next prime is 231115133. The reversal of 231115122 is 221511132.

231115122 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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 = 231115095 and 231115104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161703 + ... + 163125.

It is an arithmetic number, because the mean of its divisors is an integer number (11940240).

Almost surely, 2^231115122 is an apocalyptic number.

231115122 is an abundant number, since it is smaller than the sum of its proper divisors (342016398).

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

231115122 is a wasteful number, since it uses less digits than its factorization.

231115122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2727 (or 2724 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 231115122 is about 15202.4709175844. The cubic root of 231115122 is about 613.6811555661.

Adding to 231115122 its reverse (221511132), we get a palindrome (452626254).

The spelling of 231115122 in words is "two hundred thirty-one million, one hundred fifteen thousand, one hundred twenty-two".