113138211 has 4 divisors (see below), whose sum is σ = 150850952. Its totient is φ = 75425472.

The previous prime is 113138197. The next prime is 113138237. The reversal of 113138211 is 112831311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 113138211 - 2⁷ = 113138083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (113138261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18856366 + ... + 18856371.

It is an arithmetic number, because the mean of its divisors is an integer number (37712738).

Almost surely, 2^113138211 is an apocalyptic number.

113138211 is a deficient number, since it is larger than the sum of its proper divisors (37712741).

113138211 is an equidigital number, since it uses as much as digits as its factorization.

113138211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37712740.

The product of its digits is 144, while the sum is 21.

The square root of 113138211 is about 10636.6447247241. The cubic root of 113138211 is about 483.6558395610.

Adding to 113138211 its reverse (112831311), we get a palindrome (225969522).

The spelling of 113138211 in words is "one hundred thirteen million, one hundred thirty-eight thousand, two hundred eleven".