23423412421 has 4 divisors (see below), whose sum is σ = 23485216000. Its totient is φ = 23361608844.

The previous prime is 23423412373. The next prime is 23423412427. The reversal of 23423412421 is 12421432432.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23423412421 - 2⁷ = 23423412293 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23423412421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23423412427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30901221 + ... + 30901978.

It is an arithmetic number, because the mean of its divisors is an integer number (5871304000).

Almost surely, 2^23423412421 is an apocalyptic number.

It is an amenable number.

23423412421 is a deficient number, since it is larger than the sum of its proper divisors (61803579).

23423412421 is an equidigital number, since it uses as much as digits as its factorization.

23423412421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61803578.

The product of its digits is 9216, while the sum is 28.

Adding to 23423412421 its reverse (12421432432), we get a palindrome (35844844853).

The spelling of 23423412421 in words is "twenty-three billion, four hundred twenty-three million, four hundred twelve thousand, four hundred twenty-one".