231301221984 has 72 divisors (see below), whose sum is σ = 751728978000. Its totient is φ = 66086062848.

The previous prime is 231301221967. The next prime is 231301222021. The reversal of 231301221984 is 489122103132.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 57364359 + ... + 57368390.

It is an arithmetic number, because the mean of its divisors is an integer number (10440680250).

Almost surely, 2^231301221984 is an apocalyptic number.

231301221984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

231301221984 is an abundant number, since it is smaller than the sum of its proper divisors (520427756016).

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

231301221984 is a wasteful number, since it uses less digits than its factorization.

231301221984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114732772 (or 114732761 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The spelling of 231301221984 in words is "two hundred thirty-one billion, three hundred one million, two hundred twenty-one thousand, nine hundred eighty-four".