311000321122 has 4 divisors (see below), whose sum is σ = 466500481686. Its totient is φ = 155500160560.

The previous prime is 311000321077. The next prime is 311000321141. The reversal of 311000321122 is 221123000113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 221123000113 = 4673 ⋅47319281.

It can be written as a sum of positive squares in only one way, i.e., 263200806961 + 47799514161 = 513031^2 + 218631^2 .

It is a junction number, because it is equal to n+sod(n) for n = 311000321096 and 311000321105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77750080279 + ... + 77750080282.

Almost surely, 2^311000321122 is an apocalyptic number.

311000321122 is a deficient number, since it is larger than the sum of its proper divisors (155500160564).

311000321122 is a wasteful number, since it uses less digits than its factorization.

311000321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155500160563.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 311000321122 its reverse (221123000113), we get a palindrome (532123321235).

The spelling of 311000321122 in words is "three hundred eleven billion, three hundred twenty-one thousand, one hundred twenty-two".