231110381832 has 128 divisors (see below), whose sum is σ = 654012455040. Its totient is φ = 67437895680.

The previous prime is 231110381779. The next prime is 231110381911. The reversal of 231110381832 is 238183011132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 231110381793 and 231110381802.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 825538 + ... + 1069454.

It is an arithmetic number, because the mean of its divisors is an integer number (5109472305).

Almost surely, 2^231110381832 is an apocalyptic number.

231110381832 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 231110381832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327006227520).

231110381832 is an abundant number, since it is smaller than the sum of its proper divisors (422902073208).

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

231110381832 is a wasteful number, since it uses less digits than its factorization.

231110381832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244071 (or 244067 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

Adding to 231110381832 its reverse (238183011132), we get a palindrome (469293392964).

The spelling of 231110381832 in words is "two hundred thirty-one billion, one hundred ten million, three hundred eighty-one thousand, eight hundred thirty-two".