4231121443 has 4 divisors (see below), whose sum is σ = 4248825120. Its totient is φ = 4213417768.

The previous prime is 4231121407. The next prime is 4231121471. The reversal of 4231121443 is 3441211324.

4231121443 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.

It is a cyclic number.

It is not a de Polignac number, because 4231121443 - 2⁹ = 4231120931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4231121243) 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, 8851480 + ... + 8851957.

It is an arithmetic number, because the mean of its divisors is an integer number (1062206280).

Almost surely, 2^4231121443 is an apocalyptic number.

4231121443 is a deficient number, since it is larger than the sum of its proper divisors (17703677).

4231121443 is a wasteful number, since it uses less digits than its factorization.

4231121443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17703676.

The product of its digits is 2304, while the sum is 25.

The square root of 4231121443 is about 65047.0709794069. The cubic root of 4231121443 is about 1617.4039407625.

Adding to 4231121443 its reverse (3441211324), we get a palindrome (7672332767).

The spelling of 4231121443 in words is "four billion, two hundred thirty-one million, one hundred twenty-one thousand, four hundred forty-three".