231044065 has 24 divisors (see below), whose sum is σ = 325746792. Its totient is φ = 156844800.

The previous prime is 231044063. The next prime is 231044083. The reversal of 231044065 is 560440132.

It can be written as a sum of positive squares in 4 ways, for example, as 140280336 + 90763729 = 11844^2 + 9527^2 .

It is not a de Polignac number, because 231044065 - 2¹ = 231044063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (231044063) 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, 20077 + ... + 29413.

It is an arithmetic number, because the mean of its divisors is an integer number (13572783).

Almost surely, 2^231044065 is an apocalyptic number.

It is an amenable number.

231044065 is a deficient number, since it is larger than the sum of its proper divisors (94702727).

231044065 is a wasteful number, since it uses less digits than its factorization.

231044065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9457 (or 9450 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 231044065 is about 15200.1337165171. The cubic root of 231044065 is about 613.6182564487.

Adding to 231044065 its reverse (560440132), we get a palindrome (791484197).

The spelling of 231044065 in words is "two hundred thirty-one million, forty-four thousand, sixty-five".