231020252 has 24 divisors (see below), whose sum is σ = 415341696. Its totient is φ = 112372848.

The previous prime is 231020249. The next prime is 231020287. The reversal of 231020252 is 252020132.

231020252 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 231020252.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42683 + ... + 47789.

It is an arithmetic number, because the mean of its divisors is an integer number (17305904).

Almost surely, 2^231020252 is an apocalyptic number.

It is an amenable number.

231020252 is a deficient number, since it is larger than the sum of its proper divisors (184321444).

231020252 is a wasteful number, since it uses less digits than its factorization.

231020252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5417 (or 5415 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 231020252 is about 15199.3503808551. The cubic root of 231020252 is about 613.5971744766.

Adding to 231020252 its reverse (252020132), we get a palindrome (483040384).

The spelling of 231020252 in words is "two hundred thirty-one million, twenty thousand, two hundred fifty-two".