231321112000 has 112 divisors (see below), whose sum is σ = 624945765600. Its totient is φ = 84116736000.

The previous prime is 231321111991. The next prime is 231321112027. The reversal of 231321112000 is 211123132.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1226325 + ... + 1402324.

Almost surely, 2^231321112000 is an apocalyptic number.

231321112000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

231321112000 is an abundant number, since it is smaller than the sum of its proper divisors (393624653600).

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

231321112000 is a wasteful number, since it uses less digits than its factorization.

231321112000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2628687 (or 2628667 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 231321112000 its reverse (211123132), we get a palindrome (231532235132).

The spelling of 231321112000 in words is "two hundred thirty-one billion, three hundred twenty-one million, one hundred twelve thousand".