111608329 has 12 divisors (see below), whose sum is σ = 130170900. Its totient is φ = 95413248.

The previous prime is 111608323. The next prime is 111608359. The reversal of 111608329 is 923806111.

It can be written as a sum of positive squares in 2 ways, for example, as 63680400 + 47927929 = 7980^2 + 6923^2 .

It is not a de Polignac number, because 111608329 - 2¹⁹ = 111084041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111608329.

It is not an unprimeable number, because it can be changed into a prime (111608323) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17257 + ... + 22825.

It is an arithmetic number, because the mean of its divisors is an integer number (10847575).

Almost surely, 2^111608329 is an apocalyptic number.

It is an amenable number.

111608329 is a deficient number, since it is larger than the sum of its proper divisors (18562571).

111608329 is an equidigital number, since it uses as much as digits as its factorization.

111608329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5992 (or 5985 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 111608329 is about 10564.4843224835. The cubic root of 111608329 is about 481.4659020240.

The spelling of 111608329 in words is "one hundred eleven million, six hundred eight thousand, three hundred twenty-nine".