311112140 has 24 divisors (see below), whose sum is σ = 656728800. Its totient is φ = 123798528.

The previous prime is 311112127. The next prime is 311112143. The reversal of 311112140 is 41211113.

311112140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (311112143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36440 + ... + 44159.

It is an arithmetic number, because the mean of its divisors is an integer number (27363700).

Almost surely, 2^311112140 is an apocalyptic number.

It is an amenable number.

311112140 is an abundant number, since it is smaller than the sum of its proper divisors (345616660).

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

311112140 is a wasteful number, since it uses less digits than its factorization.

311112140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80801 (or 80799 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 311112140 is about 17638.3712399983. The cubic root of 311112140 is about 677.5983181797.

Adding to 311112140 its reverse (41211113), we get a palindrome (352323253).

It can be divided in two parts, 3111 and 12140, that added together give a palindrome (15251).

The spelling of 311112140 in words is "three hundred eleven million, one hundred twelve thousand, one hundred forty".