230131865 has 4 divisors (see below), whose sum is σ = 276158244. Its totient is φ = 184105488.

The previous prime is 230131861. The next prime is 230131903. The reversal of 230131865 is 568131032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 89661961 + 140469904 = 9469^2 + 11852^2 .

It is a cyclic number.

It is not a de Polignac number, because 230131865 - 2² = 230131861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (230131861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23013182 + ... + 23013191.

It is an arithmetic number, because the mean of its divisors is an integer number (69039561).

Almost surely, 2^230131865 is an apocalyptic number.

It is an amenable number.

230131865 is a deficient number, since it is larger than the sum of its proper divisors (46026379).

230131865 is an equidigital number, since it uses as much as digits as its factorization.

230131865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46026378.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 230131865 is about 15170.0977254598. The cubic root of 230131865 is about 612.8096360303.

Adding to 230131865 its reverse (568131032), we get a palindrome (798262897).

The spelling of 230131865 in words is "two hundred thirty million, one hundred thirty-one thousand, eight hundred sixty-five".