23241209 has 4 divisors (see below), whose sum is σ = 24042660. Its totient is φ = 22439760.

The previous prime is 23241191. The next prime is 23241233. The reversal of 23241209 is 90214232.

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 15429184 + 7812025 = 3928^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 23241209 - 2¹⁶ = 23175673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23241269) 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, 400682 + ... + 400739.

It is an arithmetic number, because the mean of its divisors is an integer number (6010665).

Almost surely, 2^23241209 is an apocalyptic number.

23241209 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

23241209 is a deficient number, since it is larger than the sum of its proper divisors (801451).

23241209 is an equidigital number, since it uses as much as digits as its factorization.

23241209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801450.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 23241209 is about 4820.9137100761. The cubic root of 23241209 is about 285.3773968195.

The spelling of 23241209 in words is "twenty-three million, two hundred forty-one thousand, two hundred nine".