311120222 has 16 divisors (see below), whose sum is σ = 545753472. Its totient is φ = 130236120.

The previous prime is 311120221. The next prime is 311120239. The reversal of 311120222 is 222021113.

It is a happy number.

311120222 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 311120197 and 311120206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311120221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257804 + ... + 259007.

It is an arithmetic number, because the mean of its divisors is an integer number (34109592).

Almost surely, 2^311120222 is an apocalyptic number.

311120222 is a deficient number, since it is larger than the sum of its proper divisors (234633250).

311120222 is a wasteful number, since it uses less digits than its factorization.

311120222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516863.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 311120222 is about 17638.6003412969. The cubic root of 311120222 is about 677.6041856270.

Adding to 311120222 its reverse (222021113), we get a palindrome (533141335).

The spelling of 311120222 in words is "three hundred eleven million, one hundred twenty thousand, two hundred twenty-two".