40344440131 has 4 divisors (see below), whose sum is σ = 40349806200. Its totient is φ = 40339074064.

The previous prime is 40344440107. The next prime is 40344440159. The reversal of 40344440131 is 13104444304.

It is a happy number.

40344440131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 40344440131 - 2³⁵ = 5984701763 is a prime.

It is a super-2 number, since 2×40344440131² (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 40344440131.

It is not an unprimeable number, because it can be changed into a prime (40344440161) 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, 2671741 + ... + 2686798.

It is an arithmetic number, because the mean of its divisors is an integer number (10087451550).

Almost surely, 2^40344440131 is an apocalyptic number.

40344440131 is a deficient number, since it is larger than the sum of its proper divisors (5366069).

40344440131 is an equidigital number, since it uses as much as digits as its factorization.

40344440131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5366068.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 40344440131 its reverse (13104444304), we get a palindrome (53448884435).

The spelling of 40344440131 in words is "forty billion, three hundred forty-four million, four hundred forty thousand, one hundred thirty-one".