18311031120112 has 40 divisors (see below), whose sum is σ = 36437634248400. Its totient is φ = 8907786381312.

The previous prime is 18311031120097. The next prime is 18311031120163. The reversal of 18311031120112 is 21102113011381.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18812064 + ... + 19761472.

It is an arithmetic number, because the mean of its divisors is an integer number (910940856210).

Almost surely, 2^{18311031120112} is an apocalyptic number.

It is an amenable number.

18311031120112 is a deficient number, since it is larger than the sum of its proper divisors (18126603128288).

18311031120112 is a wasteful number, since it uses less digits than its factorization.

18311031120112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982033 (or 982027 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 25.

Adding to 18311031120112 its reverse (21102113011381), we get a palindrome (39413144131493).

The spelling of 18311031120112 in words is "eighteen trillion, three hundred eleven billion, thirty-one million, one hundred twenty thousand, one hundred twelve".