304432342021 has 4 divisors (see below), whose sum is σ = 306114288844. Its totient is φ = 302750395200.

The previous prime is 304432342013. The next prime is 304432342051. The reversal of 304432342021 is 120243234403.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6070591396 + 298361750625 = 77914^2 + 546225^2 .

It is a cyclic number.

It is not a de Polignac number, because 304432342021 - 2³ = 304432342013 is a prime.

It is a super-2 number, since 2×304432342021² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304432342051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 840973140 + ... + 840973501.

It is an arithmetic number, because the mean of its divisors is an integer number (76528572211).

Almost surely, 2^304432342021 is an apocalyptic number.

It is an amenable number.

304432342021 is a deficient number, since it is larger than the sum of its proper divisors (1681946823).

304432342021 is a wasteful number, since it uses less digits than its factorization.

304432342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681946822.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 304432342021 its reverse (120243234403), we get a palindrome (424675576424).

The spelling of 304432342021 in words is "three hundred four billion, four hundred thirty-two million, three hundred forty-two thousand, twenty-one".