230021213 has 2 divisors, whose sum is σ = 230021214. Its totient is φ = 230021212.

The previous prime is 230021177. The next prime is 230021221. The reversal of 230021213 is 312120032.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 210192004 + 19829209 = 14498^2 + 4453^2 .

It is a cyclic number.

It is not a de Polignac number, because 230021213 - 2²⁶ = 162912349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230021293) 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, 115010606 + 115010607.

It is an arithmetic number, because the mean of its divisors is an integer number (115010607).

Almost surely, 2^230021213 is an apocalyptic number.

It is an amenable number.

230021213 is a deficient number, since it is larger than the sum of its proper divisors (1).

230021213 is an equidigital number, since it uses as much as digits as its factorization.

230021213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 230021213 is about 15166.4502438771. The cubic root of 230021213 is about 612.7114032444.

Adding to 230021213 its reverse (312120032), we get a palindrome (542141245).

The spelling of 230021213 in words is "two hundred thirty million, twenty-one thousand, two hundred thirteen".