230399621 has 2 divisors, whose sum is σ = 230399622. Its totient is φ = 230399620.

The previous prime is 230399591. The next prime is 230399627. The reversal of 230399621 is 126993032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 161010721 + 69388900 = 12689^2 + 8330^2 .

It is a cyclic number.

It is not a de Polignac number, because 230399621 - 2⁶ = 230399557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230399627) 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, 115199810 + 115199811.

It is an arithmetic number, because the mean of its divisors is an integer number (115199811).

Almost surely, 2^230399621 is an apocalyptic number.

It is an amenable number.

230399621 is a deficient number, since it is larger than the sum of its proper divisors (1).

230399621 is an equidigital number, since it uses as much as digits as its factorization.

230399621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 230399621 is about 15178.9202843944. The cubic root of 230399621 is about 613.0472097673.

The spelling of 230399621 in words is "two hundred thirty million, three hundred ninety-nine thousand, six hundred twenty-one".