311331303112 has 16 divisors (see below), whose sum is σ = 583764142860. Its totient is φ = 155660865024.

The previous prime is 311331303103. The next prime is 311331303149. The reversal of 311331303112 is 211303133113.

It can be written as a sum of positive squares in 2 ways, for example, as 254594921476 + 56736381636 = 504574^2 + 238194^2 .

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, 313933 + ... + 849244.

Almost surely, 2^311331303112 is an apocalyptic number.

It is an amenable number.

311331303112 is a deficient number, since it is larger than the sum of its proper divisors (272432839748).

311331303112 is a wasteful number, since it uses less digits than its factorization.

311331303112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196640 (or 1196636 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 22.

Adding to 311331303112 its reverse (211303133113), we get a palindrome (522634436225).

The spelling of 311331303112 in words is "three hundred eleven billion, three hundred thirty-one million, three hundred three thousand, one hundred twelve".