304423231421 has 4 divisors (see below), whose sum is σ = 304426839132. Its totient is φ = 304419623712.

The previous prime is 304423231379. The next prime is 304423231423. The reversal of 304423231421 is 124132324403.

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 86119358521 + 218303872900 = 293461^2 + 467230^2 .

It is a cyclic number.

It is not a de Polignac number, because 304423231421 - 2²⁶ = 304356122557 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 (304423231423) 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, 1674176 + ... + 1847081.

It is an arithmetic number, because the mean of its divisors is an integer number (76106709783).

Almost surely, 2^304423231421 is an apocalyptic number.

It is an amenable number.

304423231421 is a deficient number, since it is larger than the sum of its proper divisors (3607711).

304423231421 is an equidigital number, since it uses as much as digits as its factorization.

304423231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3607710.

The product of its (nonzero) digits is 13824, while the sum is 29.

Adding to 304423231421 its reverse (124132324403), we get a palindrome (428555555824).

The spelling of 304423231421 in words is "three hundred four billion, four hundred twenty-three million, two hundred thirty-one thousand, four hundred twenty-one".