23340305 has 4 divisors (see below), whose sum is σ = 28008372. Its totient is φ = 18672240.

The previous prime is 23340301. The next prime is 23340307. The reversal of 23340305 is 50304332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12397441 + 10942864 = 3521^2 + 3308^2 .

It is not a de Polignac number, because 23340305 - 2² = 23340301 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23340301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2334026 + ... + 2334035.

It is an arithmetic number, because the mean of its divisors is an integer number (7002093).

Almost surely, 2^23340305 is an apocalyptic number.

It is an amenable number.

23340305 is a deficient number, since it is larger than the sum of its proper divisors (4668067).

23340305 is an equidigital number, since it uses as much as digits as its factorization.

23340305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4668066.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 23340305 is about 4831.1804975596. The cubic root of 23340305 is about 285.7824196438.

Adding to 23340305 its reverse (50304332), we get a palindrome (73644637).

The spelling of 23340305 in words is "twenty-three million, three hundred forty thousand, three hundred five".