40404423031 has 16 divisors (see below), whose sum is σ = 47015380224. Its totient is φ = 34007373504.

The previous prime is 40404423029. The next prime is 40404423061. The reversal of 40404423031 is 13032440404.

It is a cyclic number.

It is not a de Polignac number, because 40404423031 - 2¹ = 40404423029 is a prime.

It is a super-2 number, since 2×40404423031² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40404422987 and 40404423005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404423061) 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, 58165 + ... + 290158.

It is an arithmetic number, because the mean of its divisors is an integer number (2938461264).

Almost surely, 2^40404423031 is an apocalyptic number.

40404423031 is a deficient number, since it is larger than the sum of its proper divisors (6610957193).

40404423031 is a wasteful number, since it uses less digits than its factorization.

40404423031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348630.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 40404423031 its reverse (13032440404), we get a palindrome (53436863435).

The spelling of 40404423031 in words is "forty billion, four hundred four million, four hundred twenty-three thousand, thirty-one".