304320053 has 4 divisors (see below), whose sum is σ = 309478080. Its totient is φ = 299162028.

The previous prime is 304320013. The next prime is 304320101. The reversal of 304320053 is 350023403.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 350023403 = 1259 ⋅278017.

It is a cyclic number.

It is not a de Polignac number, because 304320053 - 2¹⁴ = 304303669 is a prime.

It is a super-2 number, since 2×304320053² = 185221389315845618, which 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 (304320013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2578925 + ... + 2579042.

It is an arithmetic number, because the mean of its divisors is an integer number (77369520).

Almost surely, 2^304320053 is an apocalyptic number.

It is an amenable number.

304320053 is a deficient number, since it is larger than the sum of its proper divisors (5158027).

304320053 is an equidigital number, since it uses as much as digits as its factorization.

304320053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5158026.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 304320053 is about 17444.7715089651. The cubic root of 304320053 is about 672.6309657733.

Adding to 304320053 its reverse (350023403), we get a palindrome (654343456).

The spelling of 304320053 in words is "three hundred four million, three hundred twenty thousand, fifty-three".