1232323421 has 24 divisors (see below), whose sum is σ = 1506383424. Its totient is φ = 984130560.

The previous prime is 1232323399. The next prime is 1232323447. The reversal of 1232323421 is 1243232321.

It is not a de Polignac number, because 1232323421 - 2¹⁰ = 1232322397 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232323471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1519106 + ... + 1519916.

It is an arithmetic number, because the mean of its divisors is an integer number (62765976).

Almost surely, 2^1232323421 is an apocalyptic number.

It is an amenable number.

1232323421 is a deficient number, since it is larger than the sum of its proper divisors (274060003).

1232323421 is an equidigital number, since it uses as much as digits as its factorization.

1232323421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1061 (or 948 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 1232323421 is about 35104.4644026939. The cubic root of 1232323421 is about 1072.1154819738.

Adding to 1232323421 its reverse (1243232321), we get a palindrome (2475555742).

The spelling of 1232323421 in words is "one billion, two hundred thirty-two million, three hundred twenty-three thousand, four hundred twenty-one".