23203404221 has 8 divisors (see below), whose sum is σ = 24117641184. Its totient is φ = 22304278800.

The previous prime is 23203404173. The next prime is 23203404233. The reversal of 23203404221 is 12240430232.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23203404221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203404271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3774755 + ... + 3780896.

It is an arithmetic number, because the mean of its divisors is an integer number (3014705148).

Almost surely, 2^23203404221 is an apocalyptic number.

It is an amenable number.

23203404221 is a deficient number, since it is larger than the sum of its proper divisors (914236963).

23203404221 is an equidigital number, since it uses as much as digits as its factorization.

23203404221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7555771.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 23203404221 its reverse (12240430232), we get a palindrome (35443834453).

The spelling of 23203404221 in words is "twenty-three billion, two hundred three million, four hundred four thousand, two hundred twenty-one".