230561543 has 2 divisors, whose sum is σ = 230561544. Its totient is φ = 230561542.

The previous prime is 230561533. The next prime is 230561563. The reversal of 230561543 is 345165032.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 230561543 - 2⁶ = 230561479 is a prime.

It is a super-2 number, since 2×230561543² = 106317250221081698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230561503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115280771 + 115280772.

It is an arithmetic number, because the mean of its divisors is an integer number (115280772).

Almost surely, 2^230561543 is an apocalyptic number.

230561543 is a deficient number, since it is larger than the sum of its proper divisors (1).

230561543 is an equidigital number, since it uses as much as digits as its factorization.

230561543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 29.

The square root of 230561543 is about 15184.2531261831. The cubic root of 230561543 is about 613.1907901325.

The spelling of 230561543 in words is "two hundred thirty million, five hundred sixty-one thousand, five hundred forty-three".