111312020 has 24 divisors (see below), whose sum is σ = 233971584. Its totient is φ = 44483616.

The previous prime is 111311987. The next prime is 111312023. The reversal of 111312020 is 20213111.

It is a junction number, because it is equal to n+sod(n) for n = 111311992 and 111312010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111312023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29057 + ... + 32663.

It is an arithmetic number, because the mean of its divisors is an integer number (9748816).

Almost surely, 2^111312020 is an apocalyptic number.

111312020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111312020 is an abundant number, since it is smaller than the sum of its proper divisors (122659564).

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

111312020 is a wasteful number, since it uses less digits than its factorization.

111312020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5159 (or 5157 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 111312020 is about 10550.4511751868. The cubic root of 111312020 is about 481.0394430565.

Adding to 111312020 its reverse (20213111), we get a palindrome (131525131).

The spelling of 111312020 in words is "one hundred eleven million, three hundred twelve thousand, twenty".