111431606 has 16 divisors (see below), whose sum is σ = 196369488. Its totient is φ = 46754400.

The previous prime is 111431597. The next prime is 111431647. The reversal of 111431606 is 606134111.

It is a Curzon number.

It is a congruent number.

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, 194525 + ... + 195096.

It is an arithmetic number, because the mean of its divisors is an integer number (12273093).

Almost surely, 2^111431606 is an apocalyptic number.

111431606 is a deficient number, since it is larger than the sum of its proper divisors (84937882).

111431606 is a wasteful number, since it uses less digits than its factorization.

111431606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389647.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 111431606 is about 10556.1169944256. The cubic root of 111431606 is about 481.2116466652.

Adding to 111431606 its reverse (606134111), we get a palindrome (717565717).

The spelling of 111431606 in words is "one hundred eleven million, four hundred thirty-one thousand, six hundred six".