40404030431 has 4 divisors (see below), whose sum is σ = 40432306200. Its totient is φ = 40375754664.

The previous prime is 40404030413. The next prime is 40404030449. The reversal of 40404030431 is 13403040404.

40404030431 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (40404030413) and next prime (40404030449).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40404030431 is a prime.

It is a super-2 number, since 2×40404030431² (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 = 40404030397 and 40404030406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40404030031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14135741 + ... + 14138598.

It is an arithmetic number, because the mean of its divisors is an integer number (10108076550).

Almost surely, 2^40404030431 is an apocalyptic number.

40404030431 is a deficient number, since it is larger than the sum of its proper divisors (28275769).

40404030431 is a wasteful number, since it uses less digits than its factorization.

40404030431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28275768.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 40404030431 its reverse (13403040404), we get a palindrome (53807070835).

The spelling of 40404030431 in words is "forty billion, four hundred four million, thirty thousand, four hundred thirty-one".