43004042431 has 16 divisors (see below), whose sum is σ = 51096744000. Its totient is φ = 36165109344.

The previous prime is 43004042399. The next prime is 43004042437. The reversal of 43004042431 is 13424040034.

It is not a de Polignac number, because 43004042431 - 2⁵ = 43004042399 is a prime.

It is a super-2 number, since 2×43004042431² (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 = 43004042396 and 43004042405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43004042437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1164616 + ... + 1200973.

It is an arithmetic number, because the mean of its divisors is an integer number (3193546500).

Almost surely, 2^43004042431 is an apocalyptic number.

43004042431 is a deficient number, since it is larger than the sum of its proper divisors (8092701569).

43004042431 is an equidigital number, since it uses as much as digits as its factorization.

43004042431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2365663 (or 2365649 counting only the distinct ones).

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

Adding to 43004042431 its reverse (13424040034), we get a palindrome (56428082465).

The spelling of 43004042431 in words is "forty-three billion, four million, forty-two thousand, four hundred thirty-one".