230720985 has 36 divisors (see below), whose sum is σ = 439587876. Its totient is φ = 111862080.

The previous prime is 230720983. The next prime is 230721017. The reversal of 230720985 is 589027032.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 42263001 + 188457984 = 6501^2 + 13728^2 .

It is not a de Polignac number, because 230720985 - 2¹ = 230720983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230720983) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 15742 + ... + 26631.

Almost surely, 2^230720985 is an apocalyptic number.

It is an amenable number.

230720985 is a deficient number, since it is larger than the sum of its proper divisors (208866891).

230720985 is a wasteful number, since it uses less digits than its factorization.

230720985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42406 (or 42392 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 230720985 is about 15189.5024605811. The cubic root of 230720985 is about 613.3321057461.

The spelling of 230720985 in words is "two hundred thirty million, seven hundred twenty thousand, nine hundred eighty-five".