23523443123 has 4 divisors (see below), whose sum is σ = 23549964240. Its totient is φ = 23496922008.

The previous prime is 23523443117. The next prime is 23523443149. The reversal of 23523443123 is 32134432532.

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 23523443123 - 2¹⁴ = 23523426739 is a prime.

It is a super-2 number, since 2×23523443123² (a number of 22 digits) contains 22 as substring.

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 23523443123.

It is not an unprimeable number, because it can be changed into a prime (23523440123) 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, 13259228 + ... + 13261001.

It is an arithmetic number, because the mean of its divisors is an integer number (5887491060).

Almost surely, 2^23523443123 is an apocalyptic number.

23523443123 is a deficient number, since it is larger than the sum of its proper divisors (26521117).

23523443123 is an equidigital number, since it uses as much as digits as its factorization.

23523443123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26521116.

The product of its digits is 51840, while the sum is 32.

Adding to 23523443123 its reverse (32134432532), we get a palindrome (55657875655).

The spelling of 23523443123 in words is "twenty-three billion, five hundred twenty-three million, four hundred forty-three thousand, one hundred twenty-three".