40331043424 has 144 divisors (see below), whose sum is σ = 97013790720. Its totient is φ = 16122965760.

The previous prime is 40331043407. The next prime is 40331043427. The reversal of 40331043424 is 42434013304.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 40331043392 and 40331043401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40331043427) 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 23 ways as a sum of consecutive naturals, for example, 19104129 + ... + 19106239.

It is an arithmetic number, because the mean of its divisors is an integer number (673706880).

Almost surely, 2^40331043424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40331043424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48506895360).

40331043424 is an abundant number, since it is smaller than the sum of its proper divisors (56682747296).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40331043424 is a wasteful number, since it uses less digits than its factorization.

40331043424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2281 (or 2206 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 40331043424 its reverse (42434013304), we get a palindrome (82765056728).

The spelling of 40331043424 in words is "forty billion, three hundred thirty-one million, forty-three thousand, four hundred twenty-four".