43323323431 has 4 divisors (see below), whose sum is σ = 43324417864. Its totient is φ = 43322229000.

The previous prime is 43323323401. The next prime is 43323323467. The reversal of 43323323431 is 13432332334.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43323323431 is a prime.

It is a super-2 number, since 2×43323323431² (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 = 43323323393 and 43323323402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43323323401) 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, 485520 + ... + 567781.

It is an arithmetic number, because the mean of its divisors is an integer number (10831104466).

Almost surely, 2^43323323431 is an apocalyptic number.

43323323431 is a deficient number, since it is larger than the sum of its proper divisors (1094433).

43323323431 is a wasteful number, since it uses less digits than its factorization.

43323323431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094432.

The product of its digits is 46656, while the sum is 31.

Adding to 43323323431 its reverse (13432332334), we get a palindrome (56755655765).

The spelling of 43323323431 in words is "forty-three billion, three hundred twenty-three million, three hundred twenty-three thousand, four hundred thirty-one".