231278895328320 has 1344 divisors, whose sum is σ = 981894494545920. Its totient is φ = 51045197414400.

The previous prime is 231278895328277. The next prime is 231278895328333. The reversal of 231278895328320 is 23823598872132.

It is a happy number.

231278895328320 is a `hidden beast` number, since 2 + 3 + 1 + 2 + 78 + 8 + 9 + 532 + 8 + 3 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (63).

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 191 ways as a sum of consecutive naturals, for example, 5997721840 + ... + 5997760400.

Almost surely, 2^{231278895328320} is an apocalyptic number.

231278895328320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 231278895328320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (490947247272960).

231278895328320 is an abundant number, since it is smaller than the sum of its proper divisors (750615599217600).

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

231278895328320 is a wasteful number, since it uses less digits than its factorization.

231278895328320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39089 (or 39066 counting only the distinct ones).

The product of its (nonzero) digits is 69672960, while the sum is 63.

The spelling of 231278895328320 in words is "two hundred thirty-one trillion, two hundred seventy-eight billion, eight hundred ninety-five million, three hundred twenty-eight thousand, three hundred twenty".