111381568 has 14 divisors (see below), whose sum is σ = 221022926. Its totient is φ = 55690752.

The previous prime is 111381563. The next prime is 111381577. The reversal of 111381568 is 865183111.

It can be written as a sum of positive squares in only one way, i.e., 111344704 + 36864 = 10552^2 + 192^2 .

It is not an unprimeable number, because it can be changed into a prime (111381563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 870105 + ... + 870232.

Almost surely, 2^111381568 is an apocalyptic number.

It is an amenable number.

111381568 is a deficient number, since it is larger than the sum of its proper divisors (109641358).

111381568 is an equidigital number, since it uses as much as digits as its factorization.

111381568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740349 (or 1740339 counting only the distinct ones).

The product of its digits is 5760, while the sum is 34.

The square root of 111381568 is about 10553.7466333052. The cubic root of 111381568 is about 481.1396070398.

The spelling of 111381568 in words is "one hundred eleven million, three hundred eighty-one thousand, five hundred sixty-eight".