111231311103 has 96 divisors (see below), whose sum is σ = 189965647872. Its totient is φ = 64380808800.

The previous prime is 111231311101. The next prime is 111231311119. The reversal of 111231311103 is 301113132111.

111231311103 is a `hidden beast` number, since 111 + 231 + 311 + 10 + 3 = 666.

It is not a de Polignac number, because 111231311103 - 2¹ = 111231311101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111231311101) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 59449258 + ... + 59451128.

It is an arithmetic number, because the mean of its divisors is an integer number (1978808832).

Almost surely, 2^111231311103 is an apocalyptic number.

111231311103 is a deficient number, since it is larger than the sum of its proper divisors (78734336769).

111231311103 is a wasteful number, since it uses less digits than its factorization.

111231311103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2887 (or 2875 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111231311103 its reverse (301113132111), we get a palindrome (412344443214).

The spelling of 111231311103 in words is "one hundred eleven billion, two hundred thirty-one million, three hundred eleven thousand, one hundred three".