231020389120 has 36 divisors (see below), whose sum is σ = 553366028880. Its totient is φ = 92408155136.

The previous prime is 231020389109. The next prime is 231020389133. The reversal of 231020389120 is 21983020132.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90241060 + ... + 90243619.

It is an arithmetic number, because the mean of its divisors is an integer number (15371278580).

Almost surely, 2^231020389120 is an apocalyptic number.

231020389120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231020389120 is an abundant number, since it is smaller than the sum of its proper divisors (322345639760).

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

231020389120 is an equidigital number, since it uses as much as digits as its factorization.

231020389120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180484700 (or 180484686 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 231020389120 in words is "two hundred thirty-one billion, twenty million, three hundred eighty-nine thousand, one hundred twenty".