40040044431 has 32 divisors (see below), whose sum is σ = 58151659008. Its totient is φ = 24435354240.

The previous prime is 40040044417. The next prime is 40040044441. The reversal of 40040044431 is 13444004004.

40040044431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40040044431 - 2⁵ = 40040044399 is a prime.

It is a super-2 number, since 2×40040044431² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40040044441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27180 + ... + 284286.

It is an arithmetic number, because the mean of its divisors is an integer number (1817239344).

Almost surely, 2^40040044431 is an apocalyptic number.

40040044431 is a deficient number, since it is larger than the sum of its proper divisors (18111614577).

40040044431 is a wasteful number, since it uses less digits than its factorization.

40040044431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257231.

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 40040044431 its reverse (13444004004), we get a palindrome (53484048435).

The spelling of 40040044431 in words is "forty billion, forty million, forty-four thousand, four hundred thirty-one".