304431221023 has 4 divisors (see below), whose sum is σ = 305293632768. Its totient is φ = 303568809280.

The previous prime is 304431221021. The next prime is 304431221047. The reversal of 304431221023 is 320122134403.

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

It is a cyclic number.

It is not a de Polignac number, because 304431221023 - 2¹ = 304431221021 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 (304431221021) 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 3 ways as a sum of consecutive naturals, for example, 431205343 + ... + 431206048.

It is an arithmetic number, because the mean of its divisors is an integer number (76323408192).

Almost surely, 2^304431221023 is an apocalyptic number.

304431221023 is a deficient number, since it is larger than the sum of its proper divisors (862411745).

304431221023 is an equidigital number, since it uses as much as digits as its factorization.

304431221023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862411744.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 304431221023 its reverse (320122134403), we get a palindrome (624553355426).

The spelling of 304431221023 in words is "three hundred four billion, four hundred thirty-one million, two hundred twenty-one thousand, twenty-three".