230561389 has 2 divisors, whose sum is σ = 230561390. Its totient is φ = 230561388.

The previous prime is 230561377. The next prime is 230561413. The reversal of 230561389 is 983165032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 229674025 + 887364 = 15155^2 + 942^2 .

It is a cyclic number.

It is not a de Polignac number, because 230561389 - 2¹¹ = 230559341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230561329) 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, 115280694 + 115280695.

It is an arithmetic number, because the mean of its divisors is an integer number (115280695).

Almost surely, 2^230561389 is an apocalyptic number.

It is an amenable number.

230561389 is a deficient number, since it is larger than the sum of its proper divisors (1).

230561389 is an equidigital number, since it uses as much as digits as its factorization.

230561389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 230561389 is about 15184.2480551392. The cubic root of 230561389 is about 613.1906536087.

The spelling of 230561389 in words is "two hundred thirty million, five hundred sixty-one thousand, three hundred eighty-nine".