231312244 has 18 divisors (see below), whose sum is σ = 411567702. Its totient is φ = 113752800.

The previous prime is 231312233. The next prime is 231312247. The reversal of 231312244 is 442213132.

231312244 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 879844 + 230432400 = 938^2 + 15180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231312247) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7114 + ... + 22654.

Almost surely, 2^231312244 is an apocalyptic number.

It is an amenable number.

231312244 is a deficient number, since it is larger than the sum of its proper divisors (180255458).

231312244 is a wasteful number, since it uses less digits than its factorization.

231312244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15667 (or 15604 counting only the distinct ones).

The product of its digits is 1152, while the sum is 22.

The square root of 231312244 is about 15208.9527581619. The cubic root of 231312244 is about 613.8555790014.

Adding to 231312244 its reverse (442213132), we get a palindrome (673525376).

The spelling of 231312244 in words is "two hundred thirty-one million, three hundred twelve thousand, two hundred forty-four".