113211165 has 8 divisors (see below), whose sum is σ = 181137888. Its totient is φ = 60379280.

The previous prime is 113211149. The next prime is 113211167. The reversal of 113211165 is 561112311.

It is a happy number.

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

It is not a de Polignac number, because 113211165 - 2⁴ = 113211149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113211167) by changing a digit.

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, 3773691 + ... + 3773720.

It is an arithmetic number, because the mean of its divisors is an integer number (22642236).

Almost surely, 2^113211165 is an apocalyptic number.

113211165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113211165 is a deficient number, since it is larger than the sum of its proper divisors (67926723).

113211165 is an equidigital number, since it uses as much as digits as its factorization.

113211165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7547419.

The product of its digits is 180, while the sum is 21.

The square root of 113211165 is about 10640.0735429789. The cubic root of 113211165 is about 483.7597745222.

Adding to 113211165 its reverse (561112311), we get a palindrome (674323476).

The spelling of 113211165 in words is "one hundred thirteen million, two hundred eleven thousand, one hundred sixty-five".