23421443133 has 16 divisors (see below), whose sum is σ = 36071528256. Its totient is φ = 13359824640.

The previous prime is 23421443117. The next prime is 23421443153. The reversal of 23421443133 is 33134412432.

It is a happy number.

It is not a de Polignac number, because 23421443133 - 2⁴ = 23421443117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23421443133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421443153) 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, 20874166 + ... + 20875287.

It is an arithmetic number, because the mean of its divisors is an integer number (2254470516).

Almost surely, 2^23421443133 is an apocalyptic number.

It is an amenable number.

23421443133 is a deficient number, since it is larger than the sum of its proper divisors (12650085123).

23421443133 is a wasteful number, since it uses less digits than its factorization.

23421443133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41749484.

The product of its digits is 20736, while the sum is 30.

Adding to 23421443133 its reverse (33134412432), we get a palindrome (56555855565).

The spelling of 23421443133 in words is "twenty-three billion, four hundred twenty-one million, four hundred forty-three thousand, one hundred thirty-three".