311101133212 has 24 divisors (see below), whose sum is σ = 551560184000. Its totient is φ = 153514236096.

The previous prime is 311101133137. The next prime is 311101133219. The reversal of 311101133212 is 212331101113.

It is a self number, because there is not a number n which added to its sum of digits gives 311101133212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311101133219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 509914 + ... + 939262.

Almost surely, 2^311101133212 is an apocalyptic number.

It is an amenable number.

311101133212 is a deficient number, since it is larger than the sum of its proper divisors (240459050788).

311101133212 is a wasteful number, since it uses less digits than its factorization.

311101133212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431725 (or 431723 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 311101133212 its reverse (212331101113), we get a palindrome (523432234325).

The spelling of 311101133212 in words is "three hundred eleven billion, one hundred one million, one hundred thirty-three thousand, two hundred twelve".