23423040221 has 16 divisors (see below), whose sum is σ = 27336614400. Its totient is φ = 20061372240.

The previous prime is 23423040211. The next prime is 23423040257. The reversal of 23423040221 is 12204032432.

It is not a de Polignac number, because 23423040221 - 2¹⁴ = 23423023837 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 (23423040211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 429431 + ... + 480891.

It is an arithmetic number, because the mean of its divisors is an integer number (1708538400).

Almost surely, 2^23423040221 is an apocalyptic number.

It is an amenable number.

23423040221 is a deficient number, since it is larger than the sum of its proper divisors (3913574179).

23423040221 is an equidigital number, since it uses as much as digits as its factorization.

23423040221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52809 (or 52795 counting only the distinct ones).

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

Adding to 23423040221 its reverse (12204032432), we get a palindrome (35627072653).

The spelling of 23423040221 in words is "twenty-three billion, four hundred twenty-three million, forty thousand, two hundred twenty-one".