313321312112 has 80 divisors (see below), whose sum is σ = 649624707072. Its totient is φ = 146050544640.

The previous prime is 313321312039. The next prime is 313321312121. The reversal of 313321312112 is 211213123313.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4130753 + ... + 4205919.

Almost surely, 2^313321312112 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 313321312112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (324812353536).

313321312112 is an abundant number, since it is smaller than the sum of its proper divisors (336303394960).

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

313321312112 is a wasteful number, since it uses less digits than its factorization.

313321312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75486 (or 75480 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

Adding to 313321312112 its reverse (211213123313), we get a palindrome (524534435425).

The spelling of 313321312112 in words is "three hundred thirteen billion, three hundred twenty-one million, three hundred twelve thousand, one hundred twelve".