231322221200 has 60 divisors (see below), whose sum is σ = 635144735040. Its totient is φ = 79310474880.

The previous prime is 231322221197. The next prime is 231322221241. The reversal of 231322221200 is 2122223132.

It is a happy number.

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 11 ways as a sum of consecutive naturals, for example, 41304740 + ... + 41310339.

It is an arithmetic number, because the mean of its divisors is an integer number (10585745584).

Almost surely, 2^231322221200 is an apocalyptic number.

231322221200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231322221200 is an abundant number, since it is smaller than the sum of its proper divisors (403822513840).

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

231322221200 is a wasteful number, since it uses less digits than its factorization.

231322221200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82615104 (or 82615093 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 231322221200 its reverse (2122223132), we get a palindrome (233444444332).

The spelling of 231322221200 in words is "two hundred thirty-one billion, three hundred twenty-two million, two hundred twenty-one thousand, two hundred".