23123424432 has 80 divisors (see below), whose sum is σ = 61156800000. Its totient is φ = 7526176512.

The previous prime is 23123424407. The next prime is 23123424437. The reversal of 23123424432 is 23442432132.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 23123424432.

It is not an unprimeable number, because it can be changed into a prime (23123424437) 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, 394569 + ... + 449367.

It is an arithmetic number, because the mean of its divisors is an integer number (764460000).

Almost surely, 2^23123424432 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23123424432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30578400000).

23123424432 is an abundant number, since it is smaller than the sum of its proper divisors (38033375568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23123424432 is a wasteful number, since it uses less digits than its factorization.

23123424432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55018 (or 55012 counting only the distinct ones).

The product of its digits is 27648, while the sum is 30.

Adding to 23123424432 its reverse (23442432132), we get a palindrome (46565856564).

The spelling of 23123424432 in words is "twenty-three billion, one hundred twenty-three million, four hundred twenty-four thousand, four hundred thirty-two".