23440240131 has 32 divisors (see below), whose sum is σ = 41016422400. Its totient is φ = 11535864480.

The previous prime is 23440240123. The next prime is 23440240133. The reversal of 23440240131 is 13104204432.

It is not a de Polignac number, because 23440240131 - 2³ = 23440240123 is a prime.

It is a super-2 number, since 2×23440240131² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23440240133) 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 31 ways as a sum of consecutive naturals, for example, 2665951 + ... + 2674728.

It is an arithmetic number, because the mean of its divisors is an integer number (1281763200).

Almost surely, 2^23440240131 is an apocalyptic number.

23440240131 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23440240131 is a deficient number, since it is larger than the sum of its proper divisors (17576182269).

23440240131 is a wasteful number, since it uses less digits than its factorization.

23440240131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5340719.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 23440240131 its reverse (13104204432), we get a palindrome (36544444563).

The spelling of 23440240131 in words is "twenty-three billion, four hundred forty million, two hundred forty thousand, one hundred thirty-one".