12320005 has 8 divisors (see below), whose sum is σ = 14810400. Its totient is φ = 9838416.

The previous prime is 12319997. The next prime is 12320017. The reversal of 12320005 is 50002321.

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 12320005 - 2³ = 12319997 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1426 + ... + 5164.

It is an arithmetic number, because the mean of its divisors is an integer number (1851300).

Almost surely, 2^12320005 is an apocalyptic number.

It is an amenable number.

12320005 is a deficient number, since it is larger than the sum of its proper divisors (2490395).

12320005 is an equidigital number, since it uses as much as digits as its factorization.

12320005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 12320005 is about 3509.9864672104. The cubic root of 12320005 is about 230.9601013029.

Adding to 12320005 its reverse (50002321), we get a palindrome (62322326).

The spelling of 12320005 in words is "twelve million, three hundred twenty thousand, five".