23320209 has 24 divisors (see below), whose sum is σ = 36197280. Its totient is φ = 13298560.

The previous prime is 23320181. The next prime is 23320237. The reversal of 23320209 is 90202332.

It is an interprime number because it is at equal distance from previous prime (23320181) and next prime (23320237).

It is not a de Polignac number, because 23320209 - 2¹¹ = 23318161 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23320259) 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 23 ways as a sum of consecutive naturals, for example, 4282 + ... + 8060.

It is an arithmetic number, because the mean of its divisors is an integer number (1508220).

Almost surely, 2^23320209 is an apocalyptic number.

It is an amenable number.

23320209 is a deficient number, since it is larger than the sum of its proper divisors (12877071).

23320209 is a wasteful number, since it uses less digits than its factorization.

23320209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3821 (or 3810 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 23320209 is about 4829.1002267503. The cubic root of 23320209 is about 285.7003765491.

The spelling of 23320209 in words is "twenty-three million, three hundred twenty thousand, two hundred nine".