230121613 has 2 divisors, whose sum is σ = 230121614. Its totient is φ = 230121612.

The previous prime is 230121523. The next prime is 230121631. The reversal of 230121613 is 316121032.

Together with next prime (230121631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214856964 + 15264649 = 14658^2 + 3907^2 .

It is a cyclic number.

It is not a de Polignac number, because 230121613 - 2²⁵ = 196567181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230127613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115060806 + 115060807.

It is an arithmetic number, because the mean of its divisors is an integer number (115060807).

Almost surely, 2^230121613 is an apocalyptic number.

It is an amenable number.

230121613 is a deficient number, since it is larger than the sum of its proper divisors (1).

230121613 is an equidigital number, since it uses as much as digits as its factorization.

230121613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 230121613 is about 15169.7598201158. The cubic root of 230121613 is about 612.8005360046.

Adding to 230121613 its reverse (316121032), we get a palindrome (546242645).

The spelling of 230121613 in words is "two hundred thirty million, one hundred twenty-one thousand, six hundred thirteen".