40423431344 has 20 divisors (see below), whose sum is σ = 78648106080. Its totient is φ = 20127145920.

The previous prime is 40423431343. The next prime is 40423431407. The reversal of 40423431344 is 44313432404.

It is a self number, because there is not a number n which added to its sum of digits gives 40423431344.

It is not an unprimeable number, because it can be changed into a prime (40423431343) 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 3 ways as a sum of consecutive naturals, for example, 5281667 + ... + 5289314.

It is an arithmetic number, because the mean of its divisors is an integer number (3932405304).

Almost surely, 2^40423431344 is an apocalyptic number.

It is an amenable number.

40423431344 is a deficient number, since it is larger than the sum of its proper divisors (38224674736).

40423431344 is a wasteful number, since it uses less digits than its factorization.

40423431344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10571228 (or 10571222 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 40423431344 its reverse (44313432404), we get a palindrome (84736863748).

The spelling of 40423431344 in words is "forty billion, four hundred twenty-three million, four hundred thirty-one thousand, three hundred forty-four".