304323431 has 4 divisors (see below), whose sum is σ = 304471200. Its totient is φ = 304175664.

The previous prime is 304323407. The next prime is 304323451. The reversal of 304323431 is 134323403.

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-304323431 is a prime.

It is a super-2 number, since 2×304323431² = 185225501311223522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 304323397 and 304323406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304323451) 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, 70751 + ... + 74928.

It is an arithmetic number, because the mean of its divisors is an integer number (76117800).

Almost surely, 2^304323431 is an apocalyptic number.

304323431 is a deficient number, since it is larger than the sum of its proper divisors (147769).

304323431 is a wasteful number, since it uses less digits than its factorization.

304323431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147768.

The product of its (nonzero) digits is 2592, while the sum is 23.

The square root of 304323431 is about 17444.8683285372. The cubic root of 304323431 is about 672.6334545336.

Adding to 304323431 its reverse (134323403), we get a palindrome (438646834).

The spelling of 304323431 in words is "three hundred four million, three hundred twenty-three thousand, four hundred thirty-one".