231123330 has 96 divisors (see below), whose sum is σ = 658335600. Its totient is φ = 55996416.

The previous prime is 231123271. The next prime is 231123337. The reversal of 231123330 is 33321132.

231123330 is a `hidden beast` number, since 2 + 311 + 23 + 330 = 666.

231123330 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 8 ways, for example, as 200420649 + 30702681 = 14157^2 + 5541^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (231123337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41766 + ... + 46974.

Almost surely, 2^231123330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231123330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329167800).

231123330 is an abundant number, since it is smaller than the sum of its proper divisors (427212270).

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

231123330 is a wasteful number, since it uses less digits than its factorization.

231123330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5268 (or 5265 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 231123330 is about 15202.7408713034. The cubic root of 231123330 is about 613.6884203948.

Adding to 231123330 its reverse (33321132), we get a palindrome (264444462).

The spelling of 231123330 in words is "two hundred thirty-one million, one hundred twenty-three thousand, three hundred thirty".