231903921824 has 12 divisors (see below), whose sum is σ = 456560846154. Its totient is φ = 115951960896.

The previous prime is 231903921791. The next prime is 231903921841. The reversal of 231903921824 is 428129309132.

231903921824 is digitally balanced in base 2, 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., 168208257424 + 63695664400 = 410132^2 + 252380^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3623498747 + ... + 3623498810.

Almost surely, 2^231903921824 is an apocalyptic number.

It is an amenable number.

231903921824 is a deficient number, since it is larger than the sum of its proper divisors (224656924330).

231903921824 is an equidigital number, since it uses as much as digits as its factorization.

231903921824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7246997567 (or 7246997559 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The spelling of 231903921824 in words is "two hundred thirty-one billion, nine hundred three million, nine hundred twenty-one thousand, eight hundred twenty-four".