4331233421 has 2 divisors, whose sum is σ = 4331233422. Its totient is φ = 4331233420.

The previous prime is 4331233397. The next prime is 4331233453. The reversal of 4331233421 is 1243321334.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2413756900 + 1917476521 = 49130^2 + 43789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4331233421 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4331233721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2165616710 + 2165616711.

It is an arithmetic number, because the mean of its divisors is an integer number (2165616711).

Almost surely, 2^4331233421 is an apocalyptic number.

It is an amenable number.

4331233421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4331233421 is an equidigital number, since it uses as much as digits as its factorization.

4331233421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 26.

The square root of 4331233421 is about 65812.1069484939. The cubic root of 4331233421 is about 1630.0610238486.

Adding to 4331233421 its reverse (1243321334), we get a palindrome (5574554755).

The spelling of 4331233421 in words is "four billion, three hundred thirty-one million, two hundred thirty-three thousand, four hundred twenty-one".