313220021112 has 96 divisors (see below), whose sum is σ = 871443861600. Its totient is φ = 101560096512.

The previous prime is 313220021099. The next prime is 313220021117. The reversal of 313220021112 is 211120022313.

313220021112 is a `hidden beast` number, since 313 + 220 + 0 + 21 + 112 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313220021117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13193589 + ... + 13217307.

It is an arithmetic number, because the mean of its divisors is an integer number (9077540225).

Almost surely, 2^313220021112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 313220021112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435721930800).

313220021112 is an abundant number, since it is smaller than the sum of its proper divisors (558223840488).

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

313220021112 is a wasteful number, since it uses less digits than its factorization.

313220021112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28725 (or 28718 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 313220021112 its reverse (211120022313), we get a palindrome (524340043425).

The spelling of 313220021112 in words is "three hundred thirteen billion, two hundred twenty million, twenty-one thousand, one hundred twelve".