23211311112 has 96 divisors (see below), whose sum is σ = 68624599680. Its totient is φ = 7029041280.

The previous prime is 23211311077. The next prime is 23211311141. The reversal of 23211311112 is 21111311232.

23211311112 is a `hidden beast` number, since 232 + 11 + 311 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits and also a Zuckerman number because it is divisible by the product of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1287553 + ... + 1305455.

It is an arithmetic number, because the mean of its divisors is an integer number (714839580).

Almost surely, 2^23211311112 is an apocalyptic number.

23211311112 is a gapful number since it is divisible by the number (22) 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 23211311112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34312299840).

23211311112 is an abundant number, since it is smaller than the sum of its proper divisors (45413288568).

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

23211311112 is a wasteful number, since it uses less digits than its factorization.

23211311112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19563 (or 19556 counting only the distinct ones).

The product of its digits is 72, while the sum is 18.

Adding to 23211311112 its reverse (21111311232), we get a palindrome (44322622344).

The spelling of 23211311112 in words is "twenty-three billion, two hundred eleven million, three hundred eleven thousand, one hundred twelve".