111311442 has 32 divisors (see below), whose sum is σ = 269847360. Its totient is φ = 33730560.

The previous prime is 111311419. The next prime is 111311449. The reversal of 111311442 is 244113111.

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

It is not an unprimeable number, because it can be changed into a prime (111311449) 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 15 ways as a sum of consecutive naturals, for example, 93103 + ... + 94290.

It is an arithmetic number, because the mean of its divisors is an integer number (8432730).

Almost surely, 2^111311442 is an apocalyptic number.

111311442 is an abundant number, since it is smaller than the sum of its proper divisors (158535918).

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

111311442 is a wasteful number, since it uses less digits than its factorization.

111311442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187415 (or 187409 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 111311442 is about 10550.4237829577. The cubic root of 111311442 is about 481.0386104382.

Adding to 111311442 its reverse (244113111), we get a palindrome (355424553).

The spelling of 111311442 in words is "one hundred eleven million, three hundred eleven thousand, four hundred forty-two".