23671009 has 4 divisors (see below), whose sum is σ = 24310804. Its totient is φ = 23031216.

The previous prime is 23671003. The next prime is 23671013. The reversal of 23671009 is 90017632.

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 17040384 + 6630625 = 4128^2 + 2575^2 .

It is a cyclic number.

It is not a de Polignac number, because 23671009 - 2³ = 23671001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23671001) 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, 319842 + ... + 319915.

It is an arithmetic number, because the mean of its divisors is an integer number (6077701).

Almost surely, 2^23671009 is an apocalyptic number.

It is an amenable number.

23671009 is a deficient number, since it is larger than the sum of its proper divisors (639795).

23671009 is an equidigital number, since it uses as much as digits as its factorization.

23671009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639794.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 23671009 is about 4865.2861169720. The cubic root of 23671009 is about 287.1258255193.

The spelling of 23671009 in words is "twenty-three million, six hundred seventy-one thousand, nine".