231112001100 has 144 divisors (see below), whose sum is σ = 702729133568. Its totient is φ = 58569557760.

The previous prime is 231112001077. The next prime is 231112001161. The reversal of 231112001100 is 1100211132.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 235197 + ... + 719403.

Almost surely, 2^231112001100 is an apocalyptic number.

231112001100 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 231112001100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (351364566784).

231112001100 is an abundant number, since it is smaller than the sum of its proper divisors (471617132468).

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

231112001100 is a wasteful number, since it uses less digits than its factorization.

231112001100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484304 (or 484297 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 231112001100 its reverse (1100211132), we get a palindrome (232212212232).

The spelling of 231112001100 in words is "two hundred thirty-one billion, one hundred twelve million, one thousand, one hundred".