311322122312 has 8 divisors (see below), whose sum is σ = 583728979350. Its totient is φ = 155661061152.

The previous prime is 311322122299. The next prime is 311322122329. The reversal of 311322122312 is 213221223113.

It can be written as a sum of positive squares in only one way, i.e., 245177483716 + 66144638596 = 495154^2 + 257186^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 19457632637 + ... + 19457632652.

Almost surely, 2^311322122312 is an apocalyptic number.

It is an amenable number.

311322122312 is a deficient number, since it is larger than the sum of its proper divisors (272406857038).

311322122312 is a wasteful number, since it uses less digits than its factorization.

311322122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38915265295 (or 38915265291 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

Adding to 311322122312 its reverse (213221223113), we get a palindrome (524543345425).

The spelling of 311322122312 in words is "three hundred eleven billion, three hundred twenty-two million, one hundred twenty-two thousand, three hundred twelve".