23205007 has 4 divisors (see below), whose sum is σ = 26520016. Its totient is φ = 19890000.

The previous prime is 23204971. The next prime is 23205011. The reversal of 23205007 is 70050232.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23205007 - 2⁷ = 23204879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23205067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1657494 + ... + 1657507.

It is an arithmetic number, because the mean of its divisors is an integer number (6630004).

Almost surely, 2^23205007 is an apocalyptic number.

23205007 is a deficient number, since it is larger than the sum of its proper divisors (3315009).

23205007 is an equidigital number, since it uses as much as digits as its factorization.

23205007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3315008.

The product of its (nonzero) digits is 420, while the sum is 19.

The square root of 23205007 is about 4817.1575643734. The cubic root of 23205007 is about 285.2291457631.

Adding to 23205007 its reverse (70050232), we get a palindrome (93255239).

The spelling of 23205007 in words is "twenty-three million, two hundred five thousand, seven".