304023440431 has 4 divisors (see below), whose sum is σ = 304029778432. Its totient is φ = 304017102432.

The previous prime is 304023440407. The next prime is 304023440453. The reversal of 304023440431 is 134044320403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134044320403 = 7 ⋅19149188629.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-304023440431 is a prime.

It is a super-2 number, since 2×304023440431² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 304023440431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304023440401) 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, 3096495 + ... + 3193168.

It is an arithmetic number, because the mean of its divisors is an integer number (76007444608).

Almost surely, 2^304023440431 is an apocalyptic number.

304023440431 is a deficient number, since it is larger than the sum of its proper divisors (6338001).

304023440431 is an equidigital number, since it uses as much as digits as its factorization.

304023440431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6338000.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 304023440431 its reverse (134044320403), we get a palindrome (438067760834).

The spelling of 304023440431 in words is "three hundred four billion, twenty-three million, four hundred forty thousand, four hundred thirty-one".