231331112012000 has 864 divisors, whose sum is σ = 773148432393792. Its totient is φ = 66556638720000.

The previous prime is 231331112011891. The next prime is 231331112012041. The reversal of 231331112012000 is 210211133132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 572369990 + ... + 572774010.

It is an arithmetic number, because the mean of its divisors is an integer number (894847722678).

Almost surely, 2^{231331112012000} is an apocalyptic number.

231331112012000 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 231331112012000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386574216196896).

231331112012000 is an abundant number, since it is smaller than the sum of its proper divisors (541817320381792).

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

231331112012000 is a wasteful number, since it uses less digits than its factorization.

231331112012000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404101 (or 404059 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 231331112012000 its reverse (210211133132), we get a palindrome (231541323145132).

The spelling of 231331112012000 in words is "two hundred thirty-one trillion, three hundred thirty-one billion, one hundred twelve million, twelve thousand".