304991423 has 8 divisors (see below), whose sum is σ = 343451136. Its totient is φ = 268320600.

The previous prime is 304991387. The next prime is 304991443. The reversal of 304991423 is 324199403.

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

It is a cyclic number.

It is not a de Polignac number, because 304991423 - 2⁶ = 304991359 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 (304991443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446861 + ... + 447542.

It is an arithmetic number, because the mean of its divisors is an integer number (42931392).

Almost surely, 2^304991423 is an apocalyptic number.

304991423 is a deficient number, since it is larger than the sum of its proper divisors (38459713).

304991423 is a wasteful number, since it uses less digits than its factorization.

304991423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894445.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 304991423 is about 17464.0036360509. The cubic root of 304991423 is about 673.1252398867.

The spelling of 304991423 in words is "three hundred four million, nine hundred ninety-one thousand, four hundred twenty-three".