304312431 has 8 divisors (see below), whose sum is σ = 405920944. Its totient is φ = 202789440.

The previous prime is 304312403. The next prime is 304312433. The reversal of 304312431 is 134213403.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 304312431 - 2¹⁹ = 303788143 is a prime.

It is a super-2 number, since 2×304312431² = 185212111322259522, 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 = 304312398 and 304312407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304312433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12556 + ... + 27681.

It is an arithmetic number, because the mean of its divisors is an integer number (50740118).

Almost surely, 2^304312431 is an apocalyptic number.

304312431 is a deficient number, since it is larger than the sum of its proper divisors (101608513).

304312431 is a wasteful number, since it uses less digits than its factorization.

304312431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42761.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 304312431 is about 17444.5530467249. The cubic root of 304312431 is about 672.6253501547.

Adding to 304312431 its reverse (134213403), we get a palindrome (438525834).

The spelling of 304312431 in words is "three hundred four million, three hundred twelve thousand, four hundred thirty-one".