231036224 has 14 divisors (see below), whose sum is σ = 458462634. Its totient is φ = 115518080.

The previous prime is 231036217. The next prime is 231036229. The reversal of 231036224 is 422630132.

231036224 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 only one way, i.e., 175085824 + 55950400 = 13232^2 + 7480^2 .

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 231036224.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231036229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1804907 + ... + 1805034.

It is an arithmetic number, because the mean of its divisors is an integer number (32747331).

Almost surely, 2^231036224 is an apocalyptic number.

It is an amenable number.

231036224 is a deficient number, since it is larger than the sum of its proper divisors (227426410).

231036224 is an equidigital number, since it uses as much as digits as its factorization.

231036224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3609953 (or 3609943 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 231036224 is about 15199.8757889662. The cubic root of 231036224 is about 613.6113148650.

Adding to 231036224 its reverse (422630132), we get a palindrome (653666356).

The spelling of 231036224 in words is "two hundred thirty-one million, thirty-six thousand, two hundred twenty-four".