231040304 has 80 divisors (see below), whose sum is σ = 519192960. Its totient is φ = 99316800.

The previous prime is 231040301. The next prime is 231040309. The reversal of 231040304 is 403040132.

It is a super-3 number, since 3×231040304³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (231040301) 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 15 ways as a sum of consecutive naturals, for example, 404339 + ... + 404909.

It is an arithmetic number, because the mean of its divisors is an integer number (6489912).

Almost surely, 2^231040304 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231040304, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259596480).

231040304 is an abundant number, since it is smaller than the sum of its proper divisors (288152656).

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

231040304 is a wasteful number, since it uses less digits than its factorization.

231040304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 631 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 231040304 is about 15200.0099999967. The cubic root of 231040304 is about 613.6149268807.

Adding to 231040304 its reverse (403040132), we get a palindrome (634080436).

The spelling of 231040304 in words is "two hundred thirty-one million, forty thousand, three hundred four".