23544131131 has 4 divisors (see below), whose sum is σ = 24303619264. Its totient is φ = 22784643000.

The previous prime is 23544131129. The next prime is 23544131179. The reversal of 23544131131 is 13113144532.

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 23544131131 - 2¹ = 23544131129 is a prime.

It is a super-2 number, since 2×23544131131² (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 23544131131.

It is not an unprimeable number, because it can be changed into a prime (23544131431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 379744020 + ... + 379744081.

It is an arithmetic number, because the mean of its divisors is an integer number (6075904816).

Almost surely, 2^23544131131 is an apocalyptic number.

23544131131 is a deficient number, since it is larger than the sum of its proper divisors (759488133).

23544131131 is an equidigital number, since it uses as much as digits as its factorization.

23544131131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759488132.

The product of its digits is 4320, while the sum is 28.

Adding to 23544131131 its reverse (13113144532), we get a palindrome (36657275663).

The spelling of 23544131131 in words is "twenty-three billion, five hundred forty-four million, one hundred thirty-one thousand, one hundred thirty-one".