232303331221 has 16 divisors (see below), whose sum is σ = 253026774000. Its totient is φ = 211988418048.

The previous prime is 232303331189. The next prime is 232303331327. The reversal of 232303331221 is 122133303232.

It can be written as a sum of positive squares in 8 ways, for example, as 712356100 + 231590975121 = 26690^2 + 481239^2 .

It is a cyclic number.

It is not a de Polignac number, because 232303331221 - 2⁵ = 232303331189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232303331521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8720895 + ... + 8747491.

It is an arithmetic number, because the mean of its divisors is an integer number (15814173375).

Almost surely, 2^232303331221 is an apocalyptic number.

It is an amenable number.

232303331221 is a deficient number, since it is larger than the sum of its proper divisors (20723442779).

232303331221 is a wasteful number, since it uses less digits than its factorization.

232303331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34248.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 232303331221 its reverse (122133303232), we get a palindrome (354436634453).

The spelling of 232303331221 in words is "two hundred thirty-two billion, three hundred three million, three hundred thirty-one thousand, two hundred twenty-one".