43224032431 has 4 divisors (see below), whose sum is σ = 45766622592. Its totient is φ = 40681442272.

The previous prime is 43224032239. The next prime is 43224032461. The reversal of 43224032431 is 13423042234.

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

It is not a de Polignac number, because 43224032431 - 2¹⁹ = 43223508143 is a prime.

It is a super-2 number, since 2×43224032431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43224032431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43224032461) 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, 1271295055 + ... + 1271295088.

It is an arithmetic number, because the mean of its divisors is an integer number (11441655648).

Almost surely, 2^43224032431 is an apocalyptic number.

43224032431 is a deficient number, since it is larger than the sum of its proper divisors (2542590161).

43224032431 is a wasteful number, since it uses less digits than its factorization.

43224032431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542590160.

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 43224032431 its reverse (13423042234), we get a palindrome (56647074665).

The spelling of 43224032431 in words is "forty-three billion, two hundred twenty-four million, thirty-two thousand, four hundred thirty-one".