231321332000 has 384 divisors, whose sum is σ = 634935345408. Its totient is φ = 82120704000.

The previous prime is 231321331999. The next prime is 231321332071. The reversal of 231321332000 is 233123132.

231321332000 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 354243674 + ... + 354244326.

It is an arithmetic number, because the mean of its divisors is an integer number (1653477462).

Almost surely, 2^231321332000 is an apocalyptic number.

231321332000 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 231321332000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (317467672704).

231321332000 is an abundant number, since it is smaller than the sum of its proper divisors (403614013408).

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

231321332000 is a wasteful number, since it uses less digits than its factorization.

231321332000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869 (or 851 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 231321332000 its reverse (233123132), we get a palindrome (231554455132).

The spelling of 231321332000 in words is "two hundred thirty-one billion, three hundred twenty-one million, three hundred thirty-two thousand".