311311123012 has 12 divisors (see below), whose sum is σ = 573467858320. Its totient is φ = 147463163496.

The previous prime is 311311123001. The next prime is 311311123027. The reversal of 311311123012 is 210321113113.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2048099418 + ... + 2048099569.

Almost surely, 2^311311123012 is an apocalyptic number.

It is an amenable number.

311311123012 is a deficient number, since it is larger than the sum of its proper divisors (262156735308).

311311123012 is a wasteful number, since it uses less digits than its factorization.

311311123012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4096199010 (or 4096199008 counting only the distinct ones).

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

Adding to 311311123012 its reverse (210321113113), we get a palindrome (521632236125).

The spelling of 311311123012 in words is "three hundred eleven billion, three hundred eleven million, one hundred twenty-three thousand, twelve".