111311312444 has 24 divisors (see below), whose sum is σ = 197940951936. Its totient is φ = 54759950000.

The previous prime is 111311312311. The next prime is 111311312447. The reversal of 111311312444 is 444213113111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111311312447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 259682 + ... + 538569.

It is an arithmetic number, because the mean of its divisors is an integer number (8247539664).

Almost surely, 2^111311312444 is an apocalyptic number.

It is an amenable number.

111311312444 is a deficient number, since it is larger than the sum of its proper divisors (86629639492).

111311312444 is a wasteful number, since it uses less digits than its factorization.

111311312444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798817 (or 798815 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

Adding to 111311312444 its reverse (444213113111), we get a palindrome (555524425555).

The spelling of 111311312444 in words is "one hundred eleven billion, three hundred eleven million, three hundred twelve thousand, four hundred forty-four".