311444112 has 80 divisors (see below), whose sum is σ = 936904320. Its totient is φ = 87300096.

The previous prime is 311444099. The next prime is 311444113. The reversal of 311444112 is 211444113.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (311444113) 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, 9064 + ... + 26552.

It is an arithmetic number, because the mean of its divisors is an integer number (11711304).

Almost surely, 2^311444112 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 311444112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (468452160).

311444112 is an abundant number, since it is smaller than the sum of its proper divisors (625460208).

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

311444112 is a wasteful number, since it uses less digits than its factorization.

311444112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17560 (or 17554 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

The square root of 311444112 is about 17647.7792370598. The cubic root of 311444112 is about 677.8392427840.

Adding to 311444112 its reverse (211444113), we get a palindrome (522888225).

Subtracting from 311444112 its reverse (211444113), we obtain a palindrome (99999999).

The spelling of 311444112 in words is "three hundred eleven million, four hundred forty-four thousand, one hundred twelve".