304434002021 has 8 divisors (see below), whose sum is σ = 305238437400. Its totient is φ = 303629679360.

The previous prime is 304434002017. The next prime is 304434002029. The reversal of 304434002021 is 120200434403.

It can be written as a sum of positive squares in 4 ways, for example, as 84931444900 + 219502557121 = 291430^2 + 468511^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 304434002021 - 2² = 304434002017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304434002029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10582385 + ... + 10611113.

It is an arithmetic number, because the mean of its divisors is an integer number (38154804675).

Almost surely, 2^304434002021 is an apocalyptic number.

It is an amenable number.

304434002021 is a deficient number, since it is larger than the sum of its proper divisors (804435379).

304434002021 is a wasteful number, since it uses less digits than its factorization.

304434002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56359.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 304434002021 its reverse (120200434403), we get a palindrome (424634436424).

The spelling of 304434002021 in words is "three hundred four billion, four hundred thirty-four million, two thousand, twenty-one".