230021865 has 24 divisors (see below), whose sum is σ = 399077640. Its totient is φ = 122563584.

The previous prime is 230021863. The next prime is 230021887. The reversal of 230021865 is 568120032.

It can be written as a sum of positive squares in 4 ways, for example, as 65464281 + 164557584 = 8091^2 + 12828^2 .

It is not a de Polignac number, because 230021865 - 2¹ = 230021863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230021863) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71001 + ... + 74169.

It is an arithmetic number, because the mean of its divisors is an integer number (16628235).

Almost surely, 2^230021865 is an apocalyptic number.

It is an amenable number.

230021865 is a deficient number, since it is larger than the sum of its proper divisors (169055775).

230021865 is a wasteful number, since it uses less digits than its factorization.

230021865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4793 (or 4790 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 230021865 is about 15166.4717386741. The cubic root of 230021865 is about 612.7119821583.

Adding to 230021865 its reverse (568120032), we get a palindrome (798141897).

The spelling of 230021865 in words is "two hundred thirty million, twenty-one thousand, eight hundred sixty-five".