304314021 has 12 divisors (see below), whose sum is σ = 479525280. Its totient is φ = 184432680.

The previous prime is 304314001. The next prime is 304314029. The reversal of 304314021 is 120413403.

It is not a de Polignac number, because 304314021 - 2⁹ = 304313509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 304313985 and 304314003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304314029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1536841 + ... + 1537038.

It is an arithmetic number, because the mean of its divisors is an integer number (39960440).

Almost surely, 2^304314021 is an apocalyptic number.

It is an amenable number.

304314021 is a deficient number, since it is larger than the sum of its proper divisors (175211259).

304314021 is a wasteful number, since it uses less digits than its factorization.

304314021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3073896 (or 3073893 counting only the distinct ones).

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

The square root of 304314021 is about 17444.5986196301. The cubic root of 304314021 is about 672.6265216179.

Adding to 304314021 its reverse (120413403), we get a palindrome (424727424).

The spelling of 304314021 in words is "three hundred four million, three hundred fourteen thousand, twenty-one".