311444156444 has 24 divisors (see below), whose sum is σ = 555588028800. Its totient is φ = 152717319920.

The previous prime is 311444156423. The next prime is 311444156453. The reversal of 311444156444 is 444651444113.

It is a super-2 number, since 2×311444156444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1475912 + ... + 1673679.

It is an arithmetic number, because the mean of its divisors is an integer number (23149501200).

Almost surely, 2^311444156444 is an apocalyptic number.

It is an amenable number.

311444156444 is a deficient number, since it is larger than the sum of its proper divisors (244143872356).

311444156444 is a wasteful number, since it uses less digits than its factorization.

311444156444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3150073 (or 3150071 counting only the distinct ones).

The product of its digits is 368640, while the sum is 41.

The spelling of 311444156444 in words is "three hundred eleven billion, four hundred forty-four million, one hundred fifty-six thousand, four hundred forty-four".