231021112000 has 448 divisors, whose sum is σ = 673838770176. Its totient is φ = 76814438400.

The previous prime is 231021111983. The next prime is 231021112019. The reversal of 231021112000 is 211120132.

It is a tau number, because it is divible by the number of its divisors (448).

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, 474375757 + ... + 474376243.

Almost surely, 2^231021112000 is an apocalyptic number.

231021112000 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 231021112000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336919385088).

231021112000 is an abundant number, since it is smaller than the sum of its proper divisors (442817658176).

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

231021112000 is a wasteful number, since it uses less digits than its factorization.

231021112000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 761 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 231021112000 its reverse (211120132), we get a palindrome (231232232132).

The spelling of 231021112000 in words is "two hundred thirty-one billion, twenty-one million, one hundred twelve thousand".