304031130 has 128 divisors (see below), whose sum is σ = 814544640. Its totient is φ = 72161280.

The previous prime is 304031129. The next prime is 304031171. The reversal of 304031130 is 31130403.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1679640 + ... + 1679820.

It is an arithmetic number, because the mean of its divisors is an integer number (6363630).

Almost surely, 2^304031130 is an apocalyptic number.

304031130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 304031130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (407272320).

304031130 is an abundant number, since it is smaller than the sum of its proper divisors (510513510).

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

304031130 is a wasteful number, since it uses less digits than its factorization.

304031130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 304031130 is about 17436.4884652845. The cubic root of 304031130 is about 672.4180319568.

Adding to 304031130 its reverse (31130403), we get a palindrome (335161533).

The spelling of 304031130 in words is "three hundred four million, thirty-one thousand, one hundred thirty".