23305207 has 4 divisors (see below), whose sum is σ = 23475456. Its totient is φ = 23134960.

The previous prime is 23305201. The next prime is 23305223. The reversal of 23305207 is 70250332.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23305207 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23305201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84919 + ... + 85192.

It is an arithmetic number, because the mean of its divisors is an integer number (5868864).

Almost surely, 2^23305207 is an apocalyptic number.

23305207 is a deficient number, since it is larger than the sum of its proper divisors (170249).

23305207 is a wasteful number, since it uses less digits than its factorization.

23305207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170248.

The product of its (nonzero) digits is 1260, while the sum is 22.

The square root of 23305207 is about 4827.5466854294. The cubic root of 23305207 is about 285.6390992758.

Adding to 23305207 its reverse (70250332), we get a palindrome (93555539).

The spelling of 23305207 in words is "twenty-three million, three hundred five thousand, two hundred seven".