40344031123 has 16 divisors (see below), whose sum is σ = 45861694560. Its totient is φ = 35153171200.

The previous prime is 40344031109. The next prime is 40344031157. The reversal of 40344031123 is 32113044304.

It is a cyclic number.

It is not a de Polignac number, because 40344031123 - 2²¹ = 40341933971 is a prime.

It is a super-2 number, since 2×40344031123² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40344031163) 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 15 ways as a sum of consecutive naturals, for example, 417868 + ... + 505273.

It is an arithmetic number, because the mean of its divisors is an integer number (2866355910).

Almost surely, 2^40344031123 is an apocalyptic number.

40344031123 is a deficient number, since it is larger than the sum of its proper divisors (5517663437).

40344031123 is a wasteful number, since it uses less digits than its factorization.

40344031123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 923318.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 40344031123 its reverse (32113044304), we get a palindrome (72457075427).

The spelling of 40344031123 in words is "forty billion, three hundred forty-four million, thirty-one thousand, one hundred twenty-three".