40404040131 has 128 divisors (see below), whose sum is σ = 74097192960. Its totient is φ = 18966233088.

The previous prime is 40404040109. The next prime is 40404040153. The reversal of 40404040131 is 13104040404.

It is an interprime number because it is at equal distance from previous prime (40404040109) and next prime (40404040153).

It is not a de Polignac number, because 40404040131 - 2⁶ = 40404040067 is a prime.

It is a super-2 number, since 2×40404040131² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 40404040098 and 40404040107.

It is not an unprimeable number, because it can be changed into a prime (40404040181) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 9498001 + ... + 9502253.

It is an arithmetic number, because the mean of its divisors is an integer number (578884320).

Almost surely, 2^40404040131 is an apocalyptic number.

40404040131 is a deficient number, since it is larger than the sum of its proper divisors (33693152829).

40404040131 is a wasteful number, since it uses less digits than its factorization.

40404040131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 40404040131 its reverse (13104040404), we get a palindrome (53508080535).

The spelling of 40404040131 in words is "forty billion, four hundred four million, forty thousand, one hundred thirty-one".