304231040 has 128 divisors (see below), whose sum is σ = 775526400. Its totient is φ = 113799168.

The previous prime is 304231033. The next prime is 304231043. The reversal of 304231040 is 40132403.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (304231043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1544222 + ... + 1544418.

It is an arithmetic number, because the mean of its divisors is an integer number (6058800).

Almost surely, 2^304231040 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 304231040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (387763200).

304231040 is an abundant number, since it is smaller than the sum of its proper divisors (471295360).

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

304231040 is a wasteful number, since it uses less digits than its factorization.

304231040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 350 counting only the distinct ones).

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

The square root of 304231040 is about 17442.2200421850. The cubic root of 304231040 is about 672.5653783125.

Adding to 304231040 its reverse (40132403), we get a palindrome (344363443).

The spelling of 304231040 in words is "three hundred four million, two hundred thirty-one thousand, forty".