111103131132 has 144 divisors (see below), whose sum is σ = 335043072000. Its totient is φ = 30374403840.

The previous prime is 111103131119. The next prime is 111103131133. The reversal of 111103131132 is 231131301111.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111103131133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 615369 + ... + 775167.

It is an arithmetic number, because the mean of its divisors is an integer number (2326688000).

Almost surely, 2^111103131132 is an apocalyptic number.

111103131132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111103131132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167521536000).

111103131132 is an abundant number, since it is smaller than the sum of its proper divisors (223939940868).

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

111103131132 is a wasteful number, since it uses less digits than its factorization.

111103131132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159936 (or 159931 counting only the distinct ones).

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

Adding to 111103131132 its reverse (231131301111), we get a palindrome (342234432243).

The spelling of 111103131132 in words is "one hundred eleven billion, one hundred three million, one hundred thirty-one thousand, one hundred thirty-two".