231244252 has 12 divisors (see below), whose sum is σ = 417731776. Its totient is φ = 111892320.

The previous prime is 231244249. The next prime is 231244261. The reversal of 231244252 is 252442132.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 932313 + ... + 932560.

Almost surely, 2^231244252 is an apocalyptic number.

It is an amenable number.

231244252 is a deficient number, since it is larger than the sum of its proper divisors (186487524).

231244252 is a wasteful number, since it uses less digits than its factorization.

231244252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864908 (or 1864906 counting only the distinct ones).

The product of its digits is 3840, while the sum is 25.

The square root of 231244252 is about 15206.7173314953. The cubic root of 231244252 is about 613.7954274678.

Adding to 231244252 its reverse (252442132), we get a palindrome (483686384).

It can be divided in two parts, 2312 and 44252, that added together give a palindrome (46564).

The spelling of 231244252 in words is "two hundred thirty-one million, two hundred forty-four thousand, two hundred fifty-two".