231038836 has 12 divisors (see below), whose sum is σ = 462077728. Its totient is φ = 99016632.

The previous prime is 231038831. The next prime is 231038849. The reversal of 231038836 is 638830132.

231038836 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231038831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4125666 + ... + 4125721.

Almost surely, 2^231038836 is an apocalyptic number.

It is an amenable number.

231038836 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

231038836 is a wasteful number, since it uses less digits than its factorization.

231038836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8251398 (or 8251396 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 231038836 is about 15199.9617104781. The cubic root of 231038836 is about 613.6136272682.

Adding to 231038836 its reverse (638830132), we get a palindrome (869868968).

The spelling of 231038836 in words is "two hundred thirty-one million, thirty-eight thousand, eight hundred thirty-six".