311320321102 has 32 divisors (see below), whose sum is σ = 561815251200. Its totient is φ = 126393032448.

The previous prime is 311320321099. The next prime is 311320321127. The reversal of 311320321102 is 201123023113.

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

It is a self number, because there is not a number n which added to its sum of digits gives 311320321102.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 6795549 + ... + 6841207.

It is an arithmetic number, because the mean of its divisors is an integer number (17556726600).

Almost surely, 2^311320321102 is an apocalyptic number.

311320321102 is a deficient number, since it is larger than the sum of its proper divisors (250494930098).

311320321102 is a wasteful number, since it uses less digits than its factorization.

311320321102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71320.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 311320321102 its reverse (201123023113), we get a palindrome (512443344215).

The spelling of 311320321102 in words is "three hundred eleven billion, three hundred twenty million, three hundred twenty-one thousand, one hundred two".