311313112 has 48 divisors (see below), whose sum is σ = 676492920. Its totient is φ = 133171200.

The previous prime is 311313091. The next prime is 311313127. The reversal of 311313112 is 211313113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19312 + ... + 31552.

Almost surely, 2^311313112 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 311313112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338246460).

311313112 is an abundant number, since it is smaller than the sum of its proper divisors (365179808).

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

311313112 is a wasteful number, since it uses less digits than its factorization.

311313112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12292 (or 12271 counting only the distinct ones).

The product of its digits is 54, while the sum is 16.

The square root of 311313112 is about 17644.0673315424. The cubic root of 311313112 is about 677.7441916012.

Adding to 311313112 its reverse (211313113), we get a palindrome (522626225).

Subtracting from 311313112 its reverse (211313113), we obtain a palindrome (99999999).

It can be divided in two parts, 31131 and 3112, that added together give a palindrome (34243).

The spelling of 311313112 in words is "three hundred eleven million, three hundred thirteen thousand, one hundred twelve".