230957561 has 2 divisors, whose sum is σ = 230957562. Its totient is φ = 230957560.

The previous prime is 230957557. The next prime is 230957569. The reversal of 230957561 is 165759032.

It is a happy number.

230957561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227557225 + 3400336 = 15085^2 + 1844^2 .

It is a cyclic number.

It is not a de Polignac number, because 230957561 - 2² = 230957557 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (230957569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115478780 + 115478781.

It is an arithmetic number, because the mean of its divisors is an integer number (115478781).

Almost surely, 2^230957561 is an apocalyptic number.

It is an amenable number.

230957561 is a deficient number, since it is larger than the sum of its proper divisors (1).

230957561 is an equidigital number, since it uses as much as digits as its factorization.

230957561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 230957561 is about 15197.2879488414. The cubic root of 230957561 is about 613.5416663553.

The spelling of 230957561 in words is "two hundred thirty million, nine hundred fifty-seven thousand, five hundred sixty-one".