43340443431 has 4 divisors (see below), whose sum is σ = 57787257912. Its totient is φ = 28893628952.

The previous prime is 43340443417. The next prime is 43340443439. The reversal of 43340443431 is 13434404334.

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

It is a cyclic number.

It is not a de Polignac number, because 43340443431 - 2¹¹ = 43340441383 is a prime.

It is a super-2 number, since 2×43340443431² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43340443392 and 43340443401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43340443439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7223407236 + ... + 7223407241.

It is an arithmetic number, because the mean of its divisors is an integer number (14446814478).

Almost surely, 2^43340443431 is an apocalyptic number.

43340443431 is a deficient number, since it is larger than the sum of its proper divisors (14446814481).

43340443431 is a wasteful number, since it uses less digits than its factorization.

43340443431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14446814480.

The product of its (nonzero) digits is 82944, while the sum is 33.

Adding to 43340443431 its reverse (13434404334), we get a palindrome (56774847765).

The spelling of 43340443431 in words is "forty-three billion, three hundred forty million, four hundred forty-three thousand, four hundred thirty-one".