43231121444 has 48 divisors (see below), whose sum is σ = 86753721600. Its totient is φ = 18465283200.

The previous prime is 43231121443. The next prime is 43231121467. The reversal of 43231121444 is 44412113234.

It is a super-2 number, since 2×43231121444² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43231121443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11755334 + ... + 11759010.

It is an arithmetic number, because the mean of its divisors is an integer number (1807369200).

Almost surely, 2^43231121444 is an apocalyptic number.

It is an amenable number.

43231121444 is an abundant number, since it is smaller than the sum of its proper divisors (43522600156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43231121444 is a wasteful number, since it uses less digits than its factorization.

43231121444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4988 (or 4986 counting only the distinct ones).

The product of its digits is 9216, while the sum is 29.

Adding to 43231121444 its reverse (44412113234), we get a palindrome (87643234678).

The spelling of 43231121444 in words is "forty-three billion, two hundred thirty-one million, one hundred twenty-one thousand, four hundred forty-four".