311320020122 has 16 divisors (see below), whose sum is σ = 472219056360. Its totient is φ = 153922510848.

The previous prime is 311320020113. The next prime is 311320020157. The reversal of 311320020122 is 221020023113.

It can be written as a sum of positive squares in 4 ways, for example, as 310294675681 + 1025344441 = 557041^2 + 32021^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 311320020122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2140097 + ... + 2280932.

Almost surely, 2^311320020122 is an apocalyptic number.

311320020122 is a deficient number, since it is larger than the sum of its proper divisors (160899036238).

311320020122 is a wasteful number, since it uses less digits than its factorization.

311320020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421425.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 311320020122 its reverse (221020023113), we get a palindrome (532340043235).

The spelling of 311320020122 in words is "three hundred eleven billion, three hundred twenty million, twenty thousand, one hundred twenty-two".