311102223112 has 8 divisors (see below), whose sum is σ = 583316668350. Its totient is φ = 155551111552.

The previous prime is 311102223101. The next prime is 311102223119. The reversal of 311102223112 is 211322201113.

It can be written as a sum of positive squares in only one way, i.e., 201200690916 + 109901532196 = 448554^2 + 331514^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 311102223112.

It is not an unprimeable number, because it can be changed into a prime (311102223119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19443888937 + ... + 19443888952.

Almost surely, 2^311102223112 is an apocalyptic number.

It is an amenable number.

311102223112 is a deficient number, since it is larger than the sum of its proper divisors (272214445238).

311102223112 is a wasteful number, since it uses less digits than its factorization.

311102223112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38887777895 (or 38887777891 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 311102223112 its reverse (211322201113), we get a palindrome (522424424225).

The spelling of 311102223112 in words is "three hundred eleven billion, one hundred two million, two hundred twenty-three thousand, one hundred twelve".