311223022022 has 32 divisors (see below), whose sum is σ = 521169790464. Its totient is φ = 138172904800.

The previous prime is 311223022021. The next prime is 311223022031. The reversal of 311223022022 is 220220322113.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 311223021985 and 311223022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311223022021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201188 + ... + 814200.

It is an arithmetic number, because the mean of its divisors is an integer number (16286555952).

Almost surely, 2^311223022022 is an apocalyptic number.

311223022022 is a deficient number, since it is larger than the sum of its proper divisors (209946768442).

311223022022 is a wasteful number, since it uses less digits than its factorization.

311223022022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613564.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 311223022022 its reverse (220220322113), we get a palindrome (531443344135).

The spelling of 311223022022 in words is "three hundred eleven billion, two hundred twenty-three million, twenty-two thousand, twenty-two".