231783728252 has 24 divisors (see below), whose sum is σ = 430409278656. Its totient is φ = 108839098368.

The previous prime is 231783728251. The next prime is 231783728279. The reversal of 231783728252 is 252827387132.

It is a self number, because there is not a number n which added to its sum of digits gives 231783728252.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (231783728251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3649493 + ... + 3712460.

It is an arithmetic number, because the mean of its divisors is an integer number (17933719944).

Almost surely, 2^231783728252 is an apocalyptic number.

It is an amenable number.

231783728252 is a deficient number, since it is larger than the sum of its proper divisors (198625550404).

231783728252 is a wasteful number, since it uses less digits than its factorization.

231783728252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7362437 (or 7362435 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 50.

The spelling of 231783728252 in words is "two hundred thirty-one billion, seven hundred eighty-three million, seven hundred twenty-eight thousand, two hundred fifty-two".