304220021023 has 4 divisors (see below), whose sum is σ = 304233152080. Its totient is φ = 304206889968.

The previous prime is 304220020961. The next prime is 304220021111. The reversal of 304220021023 is 320120022403.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304220021023 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 (304220021923) 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, 6530715 + ... + 6577132.

It is an arithmetic number, because the mean of its divisors is an integer number (76058288020).

Almost surely, 2^304220021023 is an apocalyptic number.

304220021023 is a deficient number, since it is larger than the sum of its proper divisors (13131057).

304220021023 is a wasteful number, since it uses less digits than its factorization.

304220021023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13131056.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 304220021023 its reverse (320120022403), we get a palindrome (624340043426).

The spelling of 304220021023 in words is "three hundred four billion, two hundred twenty million, twenty-one thousand, twenty-three".