311636012 has 6 divisors (see below), whose sum is σ = 545363028. Its totient is φ = 155818004.

The previous prime is 311636011. The next prime is 311636021. The reversal of 311636012 is 210636113.

It is a happy number.

311636012 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 (311636011) by changing a digit.

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 as a sum of consecutive naturals, namely, 38954498 + ... + 38954505.

It is an arithmetic number, because the mean of its divisors is an integer number (90893838).

Almost surely, 2^311636012 is an apocalyptic number.

It is an amenable number.

311636012 is a deficient number, since it is larger than the sum of its proper divisors (233727016).

311636012 is a wasteful number, since it uses less digits than its factorization.

311636012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77909007 (or 77909005 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 311636012 is about 17653.2153445201. The cubic root of 311636012 is about 677.9784337748.

The spelling of 311636012 in words is "three hundred eleven million, six hundred thirty-six thousand, twelve".