43443213131 has 8 divisors (see below), whose sum is σ = 43531704384. Its totient is φ = 43354808640.

The previous prime is 43443213113. The next prime is 43443213139. The reversal of 43443213131 is 13131234434.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43443213131 - 2⁶ = 43443213067 is a prime.

It is a super-2 number, since 2×43443213131² (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 = 43443213094 and 43443213103.

It is not an unprimeable number, because it can be changed into a prime (43443213139) 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 7 ways as a sum of consecutive naturals, for example, 1032206 + ... + 1073468.

It is an arithmetic number, because the mean of its divisors is an integer number (5441463048).

Almost surely, 2^43443213131 is an apocalyptic number.

43443213131 is a deficient number, since it is larger than the sum of its proper divisors (88491253).

43443213131 is a wasteful number, since it uses less digits than its factorization.

43443213131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43381.

The product of its digits is 10368, while the sum is 29.

Adding to 43443213131 its reverse (13131234434), we get a palindrome (56574447565).

The spelling of 43443213131 in words is "forty-three billion, four hundred forty-three million, two hundred thirteen thousand, one hundred thirty-one".