111481020 has 144 divisors (see below), whose sum is σ = 390673920. Its totient is φ = 25204608.

The previous prime is 111480989. The next prime is 111481043. The reversal of 111481020 is 20184111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111480984 and 111481002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 129351 + ... + 130209.

Almost surely, 2^111481020 is an apocalyptic number.

111481020 is a gapful number since it is divisible by the number (10) 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 111481020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195336960).

111481020 is an abundant number, since it is smaller than the sum of its proper divisors (279192900).

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

111481020 is a wasteful number, since it uses less digits than its factorization.

111481020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984 (or 979 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The square root of 111481020 is about 10558.4572736740. The cubic root of 111481020 is about 481.2827667576.

The spelling of 111481020 in words is "one hundred eleven million, four hundred eighty-one thousand, twenty".