304220023 has 4 divisors (see below), whose sum is σ = 304257688. Its totient is φ = 304182360.

The previous prime is 304220017. The next prime is 304220071. The reversal of 304220023 is 320022403.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 320022403 = 1451 ⋅220553.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304220023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304219979 and 304220006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304220003) 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, 1236 + ... + 24697.

It is an arithmetic number, because the mean of its divisors is an integer number (76064422).

Almost surely, 2^304220023 is an apocalyptic number.

304220023 is a deficient number, since it is larger than the sum of its proper divisors (37665).

304220023 is a wasteful number, since it uses less digits than its factorization.

304220023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37664.

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 304220023 is about 17441.9042251699. The cubic root of 304220023 is about 672.5572597652.

Adding to 304220023 its reverse (320022403), we get a palindrome (624242426).

The spelling of 304220023 in words is "three hundred four million, two hundred twenty thousand, twenty-three".