43234433021 has 8 divisors (see below), whose sum is σ = 46567576440. Its totient is φ = 39902349312.

The previous prime is 43234432973. The next prime is 43234433029. The reversal of 43234433021 is 12033443234.

It can be written as a sum of positive squares in 4 ways, for example, as 4123437796 + 39110995225 = 64214^2 + 197765^2 .

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 43234433021 - 2²² = 43230238717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43234433029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179156 + ... + 344333.

It is an arithmetic number, because the mean of its divisors is an integer number (5820947055).

Almost surely, 2^43234433021 is an apocalyptic number.

It is an amenable number.

43234433021 is a deficient number, since it is larger than the sum of its proper divisors (3333143419).

43234433021 is a wasteful number, since it uses less digits than its factorization.

43234433021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529855.

The product of its (nonzero) digits is 20736, while the sum is 29.

Adding to 43234433021 its reverse (12033443234), we get a palindrome (55267876255).

It can be divided in two parts, 4323 and 4433021, that added together give a palindrome (4437344).

The spelling of 43234433021 in words is "forty-three billion, two hundred thirty-four million, four hundred thirty-three thousand, twenty-one".