4243231031321 has 4 divisors (see below), whose sum is σ = 4243279085952. Its totient is φ = 4243182976692.

The previous prime is 4243231031287. The next prime is 4243231031387. The reversal of 4243231031321 is 1231301323424.

4243231031321 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 4243231031321 - 2¹⁴ = 4243231014937 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4243231031521) 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, 23894621 + ... + 24071546.

It is an arithmetic number, because the mean of its divisors is an integer number (1060819771488).

Almost surely, 2^{4243231031321} is an apocalyptic number.

It is an amenable number.

4243231031321 is a deficient number, since it is larger than the sum of its proper divisors (48054631).

4243231031321 is an equidigital number, since it uses as much as digits as its factorization.

4243231031321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48054630.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 4243231031321 its reverse (1231301323424), we get a palindrome (5474532354745).

The spelling of 4243231031321 in words is "four trillion, two hundred forty-three billion, two hundred thirty-one million, thirty-one thousand, three hundred twenty-one".