311312252445442 has 16 divisors (see below), whose sum is σ = 483289375571352. Its totient is φ = 150294072084480.

The previous prime is 311312252445391. The next prime is 311312252445487. The reversal of 311312252445442 is 244544252213113.

It can be written as a sum of positive squares in 4 ways, for example, as 200485238436961 + 110827014008481 = 14159281^2 + 10527441^2 .

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, 19569532683 + ... + 19569548590.

Almost surely, 2^{311312252445442} is an apocalyptic number.

311312252445442 is a deficient number, since it is larger than the sum of its proper divisors (171977123125910).

311312252445442 is a wasteful number, since it uses less digits than its factorization.

311312252445442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39139081413.

The product of its digits is 921600, while the sum is 43.

The spelling of 311312252445442 in words is "three hundred eleven trillion, three hundred twelve billion, two hundred fifty-two million, four hundred forty-five thousand, four hundred forty-two".