311012112 has 40 divisors (see below), whose sum is σ = 804179680. Its totient is φ = 103576320.

The previous prime is 311012089. The next prime is 311012123. The reversal of 311012112 is 211210113.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67812 + ... + 72252.

It is an arithmetic number, because the mean of its divisors is an integer number (20104492).

Almost surely, 2^311012112 is an apocalyptic number.

It is an amenable number.

311012112 is an abundant number, since it is smaller than the sum of its proper divisors (493167568).

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

311012112 is a wasteful number, since it uses less digits than its factorization.

311012112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5911 (or 5905 counting only the distinct ones).

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

The square root of 311012112 is about 17635.5354894599. The cubic root of 311012112 is about 677.5256904879.

Adding to 311012112 its reverse (211210113), we get a palindrome (522222225).

The spelling of 311012112 in words is "three hundred eleven million, twelve thousand, one hundred twelve".