12809323 has 4 divisors (see below), whose sum is σ = 12989808. Its totient is φ = 12628840.

The previous prime is 12809317. The next prime is 12809327. The reversal of 12809323 is 32390821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32390821 = 211 ⋅153511.

It is a cyclic number.

It is not a de Polignac number, because 12809323 - 2¹⁷ = 12678251 is a prime.

It is a super-3 number, since 3×12809323³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12809291 and 12809300.

It is not an unprimeable number, because it can be changed into a prime (12809327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90136 + ... + 90277.

It is an arithmetic number, because the mean of its divisors is an integer number (3247452).

Almost surely, 2^12809323 is an apocalyptic number.

12809323 is a deficient number, since it is larger than the sum of its proper divisors (180485).

12809323 is an equidigital number, since it uses as much as digits as its factorization.

12809323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180484.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 12809323 is about 3579.0114556956. The cubic root of 12809323 is about 233.9781982269.

The spelling of 12809323 in words is "twelve million, eight hundred nine thousand, three hundred twenty-three".