311240640644444 has 12 divisors (see below), whose sum is σ = 622481281288944. Its totient is φ = 133388845990464.

The previous prime is 311240640644341. The next prime is 311240640644567. The reversal of 311240640644444 is 444446046042113.

311240640644444 is an admirable number.

It is a congruent number.

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, 5557868582909 + ... + 5557868582964.

It is an arithmetic number, because the mean of its divisors is an integer number (51873440107412).

Almost surely, 2^{311240640644444} is an apocalyptic number.

It is an amenable number.

311240640644444 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

311240640644444 is a wasteful number, since it uses less digits than its factorization.

311240640644444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11115737165884 (or 11115737165882 counting only the distinct ones).

The product of its (nonzero) digits is 3538944, while the sum is 47.

Adding to 311240640644444 its reverse (444446046042113), we get a palindrome (755686686686557).

The spelling of 311240640644444 in words is "three hundred eleven trillion, two hundred forty billion, six hundred forty million, six hundred forty-four thousand, four hundred forty-four".