23209807 has 4 divisors (see below), whose sum is σ = 23221000. Its totient is φ = 23198616.

The previous prime is 23209799. The next prime is 23209817. The reversal of 23209807 is 70890232.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23209807 - 2³ = 23209799 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 (23209817) 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 3 ways as a sum of consecutive naturals, for example, 1473 + ... + 6970.

It is an arithmetic number, because the mean of its divisors is an integer number (5805250).

Almost surely, 2^23209807 is an apocalyptic number.

23209807 is a deficient number, since it is larger than the sum of its proper divisors (11193).

23209807 is an equidigital number, since it uses as much as digits as its factorization.

23209807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 23209807 is about 4817.6557577311. The cubic root of 23209807 is about 285.2488111383.

The spelling of 23209807 in words is "twenty-three million, two hundred nine thousand, eight hundred seven".