111681386 has 16 divisors (see below), whose sum is σ = 170403648. Its totient is φ = 54885600.

The previous prime is 111681379. The next prime is 111681419. The reversal of 111681386 is 683186111.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47171 + ... + 49481.

It is an arithmetic number, because the mean of its divisors is an integer number (10650228).

Almost surely, 2^111681386 is an apocalyptic number.

111681386 is a deficient number, since it is larger than the sum of its proper divisors (58722262).

111681386 is a wasteful number, since it uses less digits than its factorization.

111681386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717.

The product of its digits is 6912, while the sum is 35.

The square root of 111681386 is about 10567.9414267870. The cubic root of 111681386 is about 481.5709323643.

The spelling of 111681386 in words is "one hundred eleven million, six hundred eighty-one thousand, three hundred eighty-six".