231343112 has 96 divisors (see below), whose sum is σ = 592945920. Its totient is φ = 83180160.

The previous prime is 231343103. The next prime is 231343127. The reversal of 231343112 is 211343132.

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, 53993 + ... + 58119.

It is an arithmetic number, because the mean of its divisors is an integer number (6176520).

Almost surely, 2^231343112 is an apocalyptic number.

231343112 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231343112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296472960).

231343112 is an abundant number, since it is smaller than the sum of its proper divisors (361602808).

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

231343112 is a wasteful number, since it uses less digits than its factorization.

231343112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4171 (or 4160 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 231343112 is about 15209.9675213328. The cubic root of 231343112 is about 613.8828835817.

Adding to 231343112 its sum of digits (20), we get a palindrome (231343132).

Adding to 231343112 its reverse (211343132), we get a palindrome (442686244).

It can be divided in two parts, 231 and 343112, that added together give a palindrome (343343).

The spelling of 231343112 in words is "two hundred thirty-one million, three hundred forty-three thousand, one hundred twelve".