230605513 has 2 divisors, whose sum is σ = 230605514. Its totient is φ = 230605512.

The previous prime is 230605511. The next prime is 230605549. The reversal of 230605513 is 315506032.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 230068224 + 537289 = 15168^2 + 733^2 .

It is a cyclic number.

It is not a de Polignac number, because 230605513 - 2¹ = 230605511 is a prime.

Together with 230605511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (230605511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115302756 + 115302757.

It is an arithmetic number, because the mean of its divisors is an integer number (115302757).

Almost surely, 2^230605513 is an apocalyptic number.

It is an amenable number.

230605513 is a deficient number, since it is larger than the sum of its proper divisors (1).

230605513 is an equidigital number, since it uses as much as digits as its factorization.

230605513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 230605513 is about 15185.7009387120. The cubic root of 230605513 is about 613.2297678459.

The spelling of 230605513 in words is "two hundred thirty million, six hundred five thousand, five hundred thirteen".