40404400004031 has 24 divisors (see below), whose sum is σ = 62668296472320. Its totient is φ = 23088137394672.

The previous prime is 40404400003993. The next prime is 40404400004047. The reversal of 40404400004031 is 13040000440404.

It is not a de Polignac number, because 40404400004031 - 2¹¹ = 40404400001983 is a prime.

It is a super-2 number, since 2×40404400004031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40404400003992 and 40404400004010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404400004431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58808170 + ... + 59491256.

It is an arithmetic number, because the mean of its divisors is an integer number (2611179019680).

Almost surely, 2^{40404400004031} is an apocalyptic number.

40404400004031 is a deficient number, since it is larger than the sum of its proper divisors (22263896468289).

40404400004031 is a wasteful number, since it uses less digits than its factorization.

40404400004031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085483 (or 1085476 counting only the distinct ones).

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

Adding to 40404400004031 its reverse (13040000440404), we get a palindrome (53444400444435).

The spelling of 40404400004031 in words is "forty trillion, four hundred four billion, four hundred million, four thousand, thirty-one".