311000122 has 16 divisors (see below), whose sum is σ = 483289344. Its totient is φ = 149940000.

The previous prime is 311000099. The next prime is 311000161. The reversal of 311000122 is 221000113.

It is a junction number, because it is equal to n+sod(n) for n = 311000099 and 311000108.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8497 + ... + 26347.

It is an arithmetic number, because the mean of its divisors is an integer number (30205584).

Almost surely, 2^311000122 is an apocalyptic number.

311000122 is a deficient number, since it is larger than the sum of its proper divisors (172289222).

311000122 is a wasteful number, since it uses less digits than its factorization.

311000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18165.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 311000122 is about 17635.1955475407. The cubic root of 311000122 is about 677.5169838201.

Adding to 311000122 its reverse (221000113), we get a palindrome (532000235).

Subtracting from 311000122 its reverse (221000113), we obtain a palindrome (90000009).

The spelling of 311000122 in words is "three hundred eleven million, one hundred twenty-two", and thus it is an aban number.