311012222 has 8 divisors (see below), whose sum is σ = 469875000. Its totient is φ = 154387224.

The previous prime is 311012213. The next prime is 311012227. The reversal of 311012222 is 222210113.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 311012197 and 311012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311012227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 559097 + ... + 559652.

It is an arithmetic number, because the mean of its divisors is an integer number (58734375).

Almost surely, 2^311012222 is an apocalyptic number.

311012222 is a deficient number, since it is larger than the sum of its proper divisors (158862778).

311012222 is a wasteful number, since it uses less digits than its factorization.

311012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1118890.

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

The square root of 311012222 is about 17635.5386081628. The cubic root of 311012222 is about 677.5257703645.

Adding to 311012222 its reverse (222210113), we get a palindrome (533222335).

The spelling of 311012222 in words is "three hundred eleven million, twelve thousand, two hundred twenty-two".