232613221 has 2 divisors, whose sum is σ = 232613222. Its totient is φ = 232613220.

The previous prime is 232613207. The next prime is 232613267. The reversal of 232613221 is 122316232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148230625 + 84382596 = 12175^2 + 9186^2 .

It is a cyclic number.

It is not a de Polignac number, because 232613221 - 2¹¹ = 232611173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 232613192 and 232613201.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232613281) 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 as a sum of consecutive naturals, namely, 116306610 + 116306611.

It is an arithmetic number, because the mean of its divisors is an integer number (116306611).

Almost surely, 2^232613221 is an apocalyptic number.

It is an amenable number.

232613221 is a deficient number, since it is larger than the sum of its proper divisors (1).

232613221 is an equidigital number, since it uses as much as digits as its factorization.

232613221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 22.

The square root of 232613221 is about 15251.6628929438. The cubic root of 232613221 is about 615.0042707968.

Adding to 232613221 its reverse (122316232), we get a palindrome (354929453).

The spelling of 232613221 in words is "two hundred thirty-two million, six hundred thirteen thousand, two hundred twenty-one".