304131420 has 72 divisors (see below), whose sum is σ = 924102816. Its totient is φ = 80963712.

The previous prime is 304131409. The next prime is 304131427. The reversal of 304131420 is 24131403.

304131420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 304131393 and 304131402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304131427) 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, 147114 + ... + 149166.

Almost surely, 2^304131420 is an apocalyptic number.

304131420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

304131420 is an abundant number, since it is smaller than the sum of its proper divisors (619971396).

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

304131420 is a wasteful number, since it uses less digits than its factorization.

304131420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891 (or 2886 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 304131420 is about 17439.3640939112. The cubic root of 304131420 is about 672.4919601219.

Adding to 304131420 its reverse (24131403), we get a palindrome (328262823).

The spelling of 304131420 in words is "three hundred four million, one hundred thirty-one thousand, four hundred twenty".