213311320112 has 80 divisors (see below), whose sum is σ = 454972784640. Its totient is φ = 96877788480.

The previous prime is 213311320111. The next prime is 213311320133. The reversal of 213311320112 is 211023113312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (213311320111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30300689 + ... + 30307727.

It is an arithmetic number, because the mean of its divisors is an integer number (5687159808).

Almost surely, 2^213311320112 is an apocalyptic number.

213311320112 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 213311320112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227486392320).

213311320112 is an abundant number, since it is smaller than the sum of its proper divisors (241661464528).

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

213311320112 is a wasteful number, since it uses less digits than its factorization.

213311320112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8503 (or 8475 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 213311320112 its reverse (211023113312), we get a palindrome (424334433424).

The spelling of 213311320112 in words is "two hundred thirteen billion, three hundred eleven million, three hundred twenty thousand, one hundred twelve".