231330 has 32 divisors (see below), whose sum is σ = 606528. Its totient is φ = 56000.

The previous prime is 231323. The next prime is 231331. The reversal of 231330 is 33132.

It is a happy number.

231330 is nontrivially palindromic in base 9.

231330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (231331) by changing a digit.

231330 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21 + ... + 680.

It is an arithmetic number, because the mean of its divisors is an integer number (18954).

2²³¹³³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (303264).

231330 is an abundant number, since it is smaller than the sum of its proper divisors (375198).

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

231330 is a wasteful number, since it uses less digits than its factorization.

231330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 231330 is about 480.9677743883. The cubic root of 231330 is about 61.3871285535.

Adding to 231330 its reverse (33132), we get a palindrome (264462).

It can be divided in two parts, 231 and 330, that added together give a triangular number (561 = T₃₃).

The spelling of 231330 in words is "two hundred thirty-one thousand, three hundred thirty".