113220985 has 8 divisors (see below), whose sum is σ = 138429000. Its totient is φ = 88867584.

The previous prime is 113220971. The next prime is 113221001. The reversal of 113220985 is 589022311.

It can be written as a sum of positive squares in 4 ways, for example, as 26656569 + 86564416 = 5163^2 + 9304^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 113220985 - 2¹³ = 113212793 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 213360 + ... + 213889.

It is an arithmetic number, because the mean of its divisors is an integer number (17303625).

Almost surely, 2^113220985 is an apocalyptic number.

It is an amenable number.

113220985 is a deficient number, since it is larger than the sum of its proper divisors (25208015).

113220985 is an equidigital number, since it uses as much as digits as its factorization.

113220985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427307.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 113220985 is about 10640.5349959483. The cubic root of 113220985 is about 483.7737613160.

The spelling of 113220985 in words is "one hundred thirteen million, two hundred twenty thousand, nine hundred eighty-five".