23421420223 has 4 divisors (see below), whose sum is σ = 23443454608. Its totient is φ = 23399385840.

The previous prime is 23421420203. The next prime is 23421420227. The reversal of 23421420223 is 32202412432.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23421420223 - 2¹³ = 23421412031 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 (23421420227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11015598 + ... + 11017723.

It is an arithmetic number, because the mean of its divisors is an integer number (5860863652).

Almost surely, 2^23421420223 is an apocalyptic number.

23421420223 is a deficient number, since it is larger than the sum of its proper divisors (22034385).

23421420223 is a wasteful number, since it uses less digits than its factorization.

23421420223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22034384.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 23421420223 its reverse (32202412432), we get a palindrome (55623832655).

The spelling of 23421420223 in words is "twenty-three billion, four hundred twenty-one million, four hundred twenty thousand, two hundred twenty-three".