311443636144 has 20 divisors (see below), whose sum is σ = 604039702824. Its totient is φ = 155562422528.

The previous prime is 311443636129. The next prime is 311443636171. The reversal of 311443636144 is 441636344113.

It is a junction number, because it is equal to n+sod(n) for n = 311443636097 and 311443636106.

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, 9946102 + ... + 9977365.

Almost surely, 2^311443636144 is an apocalyptic number.

It is an amenable number.

311443636144 is a deficient number, since it is larger than the sum of its proper divisors (292596066680).

311443636144 is a wasteful number, since it uses less digits than its factorization.

311443636144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19924452 (or 19924446 counting only the distinct ones).

The product of its digits is 248832, while the sum is 40.

The spelling of 311443636144 in words is "three hundred eleven billion, four hundred forty-three million, six hundred thirty-six thousand, one hundred forty-four".