231122000000 has 112 divisors (see below), whose sum is σ = 575545562610. Its totient is φ = 92448000000.

The previous prime is 231121999993. The next prime is 231122000003. The reversal of 231122000000 is 221132.

It is a happy number.

231122000000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 7 ways, for example, as 188279623744 + 42842376256 = 433912^2 + 206984^2 .

It is not an unprimeable number, because it can be changed into a prime (231122000003) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 1942220 + ... + 2057780.

Almost surely, 2^231122000000 is an apocalyptic number.

231122000000 is a gapful number since it is divisible by the number (20) 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 231122000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287772781305).

231122000000 is an abundant number, since it is smaller than the sum of its proper divisors (344423562610).

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

231122000000 is an frugal number, since it uses more digits than its factorization.

231122000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115605 (or 115568 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 231122000000 its reverse (221132), we get a palindrome (231122221132).

The spelling of 231122000000 in words is "two hundred thirty-one billion, one hundred twenty-two million", and thus it is an aban number.