43403343431 has 12 divisors (see below), whose sum is σ = 50493016800. Its totient is φ = 37200350880.

The previous prime is 43403343413. The next prime is 43403343439. The reversal of 43403343431 is 13434330434.

It is not a de Polignac number, because 43403343431 - 2²⁶ = 43336234567 is a prime.

It is a super-2 number, since 2×43403343431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43403343439) 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 11 ways as a sum of consecutive naturals, for example, 1290770 + ... + 1323968.

It is an arithmetic number, because the mean of its divisors is an integer number (4207751400).

Almost surely, 2^43403343431 is an apocalyptic number.

43403343431 is a deficient number, since it is larger than the sum of its proper divisors (7089673369).

43403343431 is a wasteful number, since it uses less digits than its factorization.

43403343431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59894 (or 59887 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 32.

Adding to 43403343431 its reverse (13434330434), we get a palindrome (56837673865).

The spelling of 43403343431 in words is "forty-three billion, four hundred three million, three hundred forty-three thousand, four hundred thirty-one".