311120112 has 20 divisors (see below), whose sum is σ = 803727080. Its totient is φ = 103706688.

The previous prime is 311120107. The next prime is 311120113. The reversal of 311120112 is 211021113.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311120113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3240787 + ... + 3240882.

It is an arithmetic number, because the mean of its divisors is an integer number (40186354).

Almost surely, 2^311120112 is an apocalyptic number.

It is an amenable number.

311120112 is an abundant number, since it is smaller than the sum of its proper divisors (492606968).

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

311120112 is a wasteful number, since it uses less digits than its factorization.

311120112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6481680 (or 6481674 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 311120112 is about 17638.5972231354. The cubic root of 311120112 is about 677.6041057688.

Adding to 311120112 its reverse (211021113), we get a palindrome (522141225).

The spelling of 311120112 in words is "three hundred eleven million, one hundred twenty thousand, one hundred twelve".