311440031221222 has 64 divisors (see below), whose sum is σ = 483067128360960. Its totient is φ = 150514037481600.

The previous prime is 311440031221219. The next prime is 311440031221261. The reversal of 311440031221222 is 222122130044113.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11193604003 + ... + 11193631825.

It is an arithmetic number, because the mean of its divisors is an integer number (7547923880640).

Almost surely, 2^{311440031221222} is an apocalyptic number.

311440031221222 is a deficient number, since it is larger than the sum of its proper divisors (171627097139738).

311440031221222 is a wasteful number, since it uses less digits than its factorization.

311440031221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30869.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 311440031221222 its reverse (222122130044113), we get a palindrome (533562161265335).

The spelling of 311440031221222 in words is "three hundred eleven trillion, four hundred forty billion, thirty-one million, two hundred twenty-one thousand, two hundred twenty-two".