313221242122312 has 16 divisors (see below), whose sum is σ = 587583915052860. Its totient is φ = 156532198108224.

The previous prime is 313221242122279. The next prime is 313221242122343. The reversal of 313221242122312 is 213221242122313.

It can be written as a sum of positive squares in 2 ways, for example, as 193726479496356 + 119494762625956 = 13918566^2 + 10931366^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9802852143 + ... + 9802884094.

Almost surely, 2^{313221242122312} is an apocalyptic number.

It is an amenable number.

313221242122312 is a deficient number, since it is larger than the sum of its proper divisors (274362672930548).

313221242122312 is a wasteful number, since it uses less digits than its factorization.

313221242122312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19605738240 (or 19605738236 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

Adding to 313221242122312 its reverse (213221242122313), we get a palindrome (526442484244625).

Subtracting from 313221242122312 its reverse (213221242122313), we obtain a palindrome (99999999999999).

The spelling of 313221242122312 in words is "three hundred thirteen trillion, two hundred twenty-one billion, two hundred forty-two million, one hundred twenty-two thousand, three hundred twelve".