43243223021 has 8 divisors (see below), whose sum is σ = 43776082560. Its totient is φ = 42710645952.

The previous prime is 43243223003. The next prime is 43243223039. The reversal of 43243223021 is 12032234234.

It is an interprime number because it is at equal distance from previous prime (43243223003) and next prime (43243223039).

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 43243223021 - 2³⁰ = 42169481197 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 (43243223921) 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, 246140 + ... + 383498.

It is an arithmetic number, because the mean of its divisors is an integer number (5472010320).

Almost surely, 2^43243223021 is an apocalyptic number.

It is an amenable number.

43243223021 is a deficient number, since it is larger than the sum of its proper divisors (532859539).

43243223021 is a wasteful number, since it uses less digits than its factorization.

43243223021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141235.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 43243223021 its reverse (12032234234), we get a palindrome (55275457255).

The spelling of 43243223021 in words is "forty-three billion, two hundred forty-three million, two hundred twenty-three thousand, twenty-one".