304823 has 4 divisors (see below), whose sum is σ = 314688. Its totient is φ = 294960.

The previous prime is 304813. The next prime is 304831. The reversal of 304823 is 328403.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 328403 = 79 ⋅4157.

It is a cyclic number.

It is not a de Polignac number, because 304823 - 2⁴ = 304807 is a prime.

It is a super-2 number, since 2×304823² = 185834122658, 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 = 304795 and 304804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4886 + ... + 4947.

It is an arithmetic number, because the mean of its divisors is an integer number (78672).

2³⁰⁴⁸²³ is an apocalyptic number.

304823 is a deficient number, since it is larger than the sum of its proper divisors (9865).

304823 is an equidigital number, since it uses as much as digits as its factorization.

304823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9864.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 304823 is about 552.1077793330. The cubic root of 304823 is about 67.3001312197.

The spelling of 304823 in words is "three hundred four thousand, eight hundred twenty-three".