304047431 has 16 divisors (see below), whose sum is σ = 331763040. Its totient is φ = 277509120.

The previous prime is 304047427. The next prime is 304047433. The reversal of 304047431 is 134740403.

It is a cyclic number.

It is not a de Polignac number, because 304047431 - 2² = 304047427 is a prime.

It is a super-2 number, since 2×304047431² = 184889680595399522, which 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 304047431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304047433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123545 + ... + 125981.

It is an arithmetic number, because the mean of its divisors is an integer number (20735190).

Almost surely, 2^304047431 is an apocalyptic number.

304047431 is a deficient number, since it is larger than the sum of its proper divisors (27715609).

304047431 is a wasteful number, since it uses less digits than its factorization.

304047431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674.

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 304047431 is about 17436.9558983212. The cubic root of 304047431 is about 672.4300492464.

Adding to 304047431 its reverse (134740403), we get a palindrome (438787834).

The spelling of 304047431 in words is "three hundred four million, forty-seven thousand, four hundred thirty-one".