111320424 has 24 divisors (see below), whose sum is σ = 301493010. Its totient is φ = 37106784.

The previous prime is 111320423. The next prime is 111320467. The reversal of 111320424 is 424023111.

It can be written as a sum of positive squares in only one way, i.e., 102212100 + 9108324 = 10110^2 + 3018^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 = 111320397 and 111320406.

It is not an unprimeable number, because it can be changed into a prime (111320423) 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 5 ways as a sum of consecutive naturals, for example, 772987 + ... + 773130.

Almost surely, 2^111320424 is an apocalyptic number.

It is an amenable number.

111320424 is an abundant number, since it is smaller than the sum of its proper divisors (190172586).

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

111320424 is a wasteful number, since it uses less digits than its factorization.

111320424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546129 (or 1546122 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 111320424 is about 10550.8494444760. The cubic root of 111320424 is about 481.0515488283.

Adding to 111320424 its reverse (424023111), we get a palindrome (535343535).

The spelling of 111320424 in words is "one hundred eleven million, three hundred twenty thousand, four hundred twenty-four".