111231403242 has 32 divisors (see below), whose sum is σ = 229718605824. Its totient is φ = 35868663600.

The previous prime is 111231403237. The next prime is 111231403253. The reversal of 111231403242 is 242304132111.

111231403242 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×111231403242² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442267 + ... + 646577.

It is an arithmetic number, because the mean of its divisors is an integer number (7178706432).

Almost surely, 2^111231403242 is an apocalyptic number.

111231403242 is an abundant number, since it is smaller than the sum of its proper divisors (118487202582).

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

111231403242 is a wasteful number, since it uses less digits than its factorization.

111231403242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207274.

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 111231403242 its reverse (242304132111), we get a palindrome (353535535353).

The spelling of 111231403242 in words is "one hundred eleven billion, two hundred thirty-one million, four hundred three thousand, two hundred forty-two".