311321231122 has 16 divisors (see below), whose sum is σ = 509443441344. Its totient is φ = 141507234000.

The previous prime is 311321231087. The next prime is 311321231227. The reversal of 311321231122 is 221132123113.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 311321231093 and 311321231102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2121547 + ... + 2263537.

It is an arithmetic number, because the mean of its divisors is an integer number (31840215084).

Almost surely, 2^311321231122 is an apocalyptic number.

311321231122 is a deficient number, since it is larger than the sum of its proper divisors (198122210222).

311321231122 is a wasteful number, since it uses less digits than its factorization.

311321231122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241665.

The product of its digits is 432, while the sum is 22.

Adding to 311321231122 its reverse (221132123113), we get a palindrome (532453354235).

The spelling of 311321231122 in words is "three hundred eleven billion, three hundred twenty-one million, two hundred thirty-one thousand, one hundred twenty-two".