1232303221 has 4 divisors (see below), whose sum is σ = 1234753632. Its totient is φ = 1229852812.

The previous prime is 1232303203. The next prime is 1232303231. The reversal of 1232303221 is 1223032321.

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 1232303221 - 2²³ = 1223914613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232303201) 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 3 ways as a sum of consecutive naturals, for example, 1224451 + ... + 1225456.

It is an arithmetic number, because the mean of its divisors is an integer number (308688408).

Almost surely, 2^1232303221 is an apocalyptic number.

It is an amenable number.

1232303221 is a deficient number, since it is larger than the sum of its proper divisors (2450411).

1232303221 is an equidigital number, since it uses as much as digits as its factorization.

1232303221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450410.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1232303221 is about 35104.1766888215. The cubic root of 1232303221 is about 1072.1096239740.

Adding to 1232303221 its reverse (1223032321), we get a palindrome (2455335542).

The spelling of 1232303221 in words is "one billion, two hundred thirty-two million, three hundred three thousand, two hundred twenty-one".