311131021112 has 16 divisors (see below), whose sum is σ = 602189073600. Its totient is φ = 150547268160.

The previous prime is 311131021099. The next prime is 311131021121. The reversal of 311131021112 is 211120131113.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627280037 + ... + 627280532.

It is an arithmetic number, because the mean of its divisors is an integer number (37636817100).

Almost surely, 2^311131021112 is an apocalyptic number.

It is an amenable number.

311131021112 is a deficient number, since it is larger than the sum of its proper divisors (291058052488).

311131021112 is a wasteful number, since it uses less digits than its factorization.

311131021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1254560606 (or 1254560602 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 311131021112 its reverse (211120131113), we get a palindrome (522251152225).

The spelling of 311131021112 in words is "three hundred eleven billion, one hundred thirty-one million, twenty-one thousand, one hundred twelve".