231022112 has 48 divisors (see below), whose sum is σ = 483410592. Its totient is φ = 108303360.

The previous prime is 231022109. The next prime is 231022123. The reversal of 231022112 is 211220132.

It is a happy number.

231022112 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179423 + ... + 180705.

It is an arithmetic number, because the mean of its divisors is an integer number (10071054).

Almost surely, 2^231022112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231022112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241705296).

231022112 is an abundant number, since it is smaller than the sum of its proper divisors (252388480).

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

231022112 is a wasteful number, since it uses less digits than its factorization.

231022112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1641 (or 1633 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 231022112 is about 15199.4115675575. The cubic root of 231022112 is about 613.5988212120.

Adding to 231022112 its reverse (211220132), we get a palindrome (442242244).

The spelling of 231022112 in words is "two hundred thirty-one million, twenty-two thousand, one hundred twelve".