231030 has 48 divisors (see below), whose sum is σ = 640224. Its totient is φ = 57600.

The previous prime is 231019. The next prime is 231031. The reversal of 231030 is 30132.

231030 = 4² + 5² + ... + 88².

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1455 + ... + 1605.

It is an arithmetic number, because the mean of its divisors is an integer number (13338).

2²³¹⁰³⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320112).

231030 is an abundant number, since it is smaller than the sum of its proper divisors (409194).

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

231030 is a wasteful number, since it uses less digits than its factorization.

231030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 231030 is about 480.6558020039. The cubic root of 231030 is about 61.3605804688.

Adding to 231030 its reverse (30132), we get a palindrome (261162).

The spelling of 231030 in words is "two hundred thirty-one thousand, thirty".