232730321 has 2 divisors, whose sum is σ = 232730322. Its totient is φ = 232730320.

The previous prime is 232730291. The next prime is 232730327. The reversal of 232730321 is 123037232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131446225 + 101284096 = 11465^2 + 10064^2 .

It is a cyclic number.

It is not a de Polignac number, because 232730321 - 2²² = 228536017 is a prime.

It is not a weakly prime, because it can be changed into another prime (232730327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116365160 + 116365161.

It is an arithmetic number, because the mean of its divisors is an integer number (116365161).

Almost surely, 2^232730321 is an apocalyptic number.

It is an amenable number.

232730321 is a deficient number, since it is larger than the sum of its proper divisors (1).

232730321 is an equidigital number, since it uses as much as digits as its factorization.

232730321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 232730321 is about 15255.5013355838. The cubic root of 232730321 is about 615.1074534082.

Adding to 232730321 its reverse (123037232), we get a palindrome (355767553).

The spelling of 232730321 in words is "two hundred thirty-two million, seven hundred thirty thousand, three hundred twenty-one".