311112303122 has 4 divisors (see below), whose sum is σ = 466668454686. Its totient is φ = 155556151560.

The previous prime is 311112303119. The next prime is 311112303127. The reversal of 311112303122 is 221303211113.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 248662792921 + 62449510201 = 498661^2 + 249899^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311112303094 and 311112303103.

It is not an unprimeable number, because it can be changed into a prime (311112303127) 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 as a sum of consecutive naturals, namely, 77778075779 + ... + 77778075782.

Almost surely, 2^311112303122 is an apocalyptic number.

311112303122 is a deficient number, since it is larger than the sum of its proper divisors (155556151564).

311112303122 is a wasteful number, since it uses less digits than its factorization.

311112303122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155556151563.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 311112303122 its reverse (221303211113), we get a palindrome (532415514235).

The spelling of 311112303122 in words is "three hundred eleven billion, one hundred twelve million, three hundred three thousand, one hundred twenty-two".