43243314121 has 4 divisors (see below), whose sum is σ = 49420930432. Its totient is φ = 37065697812.

The previous prime is 43243314113. The next prime is 43243314181. The reversal of 43243314121 is 12141334234.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 43243314121 - 2³ = 43243314113 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43243314121.

It is not an unprimeable number, because it can be changed into a prime (43243314181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3088808145 + ... + 3088808158.

It is an arithmetic number, because the mean of its divisors is an integer number (12355232608).

Almost surely, 2^43243314121 is an apocalyptic number.

It is an amenable number.

43243314121 is a deficient number, since it is larger than the sum of its proper divisors (6177616311).

43243314121 is an equidigital number, since it uses as much as digits as its factorization.

43243314121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6177616310.

The product of its digits is 6912, while the sum is 28.

Adding to 43243314121 its reverse (12141334234), we get a palindrome (55384648355).

The spelling of 43243314121 in words is "forty-three billion, two hundred forty-three million, three hundred fourteen thousand, one hundred twenty-one".