231852758640 has 80 divisors (see below), whose sum is σ = 722150077056. Its totient is φ = 61534368000.

The previous prime is 231852758593. The next prime is 231852758663. The reversal of 231852758640 is 46857258132.

231852758640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 2238586 + ... + 2339865.

Almost surely, 2^231852758640 is an apocalyptic number.

231852758640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231852758640 is an abundant number, since it is smaller than the sum of its proper divisors (490297318416).

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

231852758640 is a wasteful number, since it uses less digits than its factorization.

231852758640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4578678 (or 4578672 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 231852758640 in words is "two hundred thirty-one billion, eight hundred fifty-two million, seven hundred fifty-eight thousand, six hundred forty".