43241021321 has 4 divisors (see below), whose sum is σ = 44246626512. Its totient is φ = 42235416132.

The previous prime is 43241021311. The next prime is 43241021339. The reversal of 43241021321 is 12312014234.

43241021321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43241021321 - 2¹⁰ = 43241020297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43241021311) 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, 502802531 + ... + 502802616.

It is an arithmetic number, because the mean of its divisors is an integer number (11061656628).

Almost surely, 2^43241021321 is an apocalyptic number.

It is an amenable number.

43241021321 is a deficient number, since it is larger than the sum of its proper divisors (1005605191).

43241021321 is a wasteful number, since it uses less digits than its factorization.

43241021321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1005605190.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 43241021321 its reverse (12312014234), we get a palindrome (55553035555).

The spelling of 43241021321 in words is "forty-three billion, two hundred forty-one million, twenty-one thousand, three hundred twenty-one".