311312122202 has 16 divisors (see below), whose sum is σ = 472194217440. Its totient is φ = 153919369968.

The previous prime is 311312122189. The next prime is 311312122211. The reversal of 311312122202 is 202221213113.

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, 1212677 + ... + 1446792.

It is an arithmetic number, because the mean of its divisors is an integer number (29512138590).

Almost surely, 2^311312122202 is an apocalyptic number.

311312122202 is a deficient number, since it is larger than the sum of its proper divisors (160882095238).

311312122202 is a wasteful number, since it uses less digits than its factorization.

311312122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2660125.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 311312122202 its reverse (202221213113), we get a palindrome (513533335315).

The spelling of 311312122202 in words is "three hundred eleven billion, three hundred twelve million, one hundred twenty-two thousand, two hundred two".