230985505 has 12 divisors (see below), whose sum is σ = 281064060. Its totient is φ = 182236032.

The previous prime is 230985499. The next prime is 230985523. The reversal of 230985505 is 505589032.

It can be written as a sum of positive squares in 6 ways, for example, as 219024 + 230766481 = 468^2 + 15191^2 .

It is a de Polignac number, because none of the positive numbers 2^k-230985505 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22311 + ... + 30979.

It is an arithmetic number, because the mean of its divisors is an integer number (23422005).

Almost surely, 2^230985505 is an apocalyptic number.

It is an amenable number.

230985505 is a deficient number, since it is larger than the sum of its proper divisors (50078555).

230985505 is an frugal number, since it uses more digits than its factorization.

230985505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8820 (or 8747 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The square root of 230985505 is about 15198.2072955990. The cubic root of 230985505 is about 613.5664098866.

The spelling of 230985505 in words is "two hundred thirty million, nine hundred eighty-five thousand, five hundred five".