308823 has 8 divisors (see below), whose sum is σ = 414336. Its totient is φ = 204600.

The previous prime is 308813. The next prime is 308827. The reversal of 308823 is 328803.

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

It is not a de Polignac number, because 308823 - 2⁹ = 308311 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 308793 and 308802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (308827) 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 7 ways as a sum of consecutive naturals, for example, 768 + ... + 1098.

It is an arithmetic number, because the mean of its divisors is an integer number (51792).

2³⁰⁸⁸²³ is an apocalyptic number.

308823 is a deficient number, since it is larger than the sum of its proper divisors (105513).

308823 is a wasteful number, since it uses less digits than its factorization.

308823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 308823 is about 555.7184538955. The cubic root of 308823 is about 67.5932319356.

The spelling of 308823 in words is "three hundred eight thousand, eight hundred twenty-three".