113211117 has 18 divisors (see below), whose sum is σ = 165009806. Its totient is φ = 74795760.

The previous prime is 113211113. The next prime is 113211121. The reversal of 113211117 is 711112311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (113211113) and next prime (113211121).

It can be written as a sum of positive squares in only one way, i.e., 112593321 + 617796 = 10611^2 + 786^2 .

It is not a de Polignac number, because 113211117 - 2² = 113211113 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 113211117.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113211113) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 154083 + ... + 154815.

Almost surely, 2^113211117 is an apocalyptic number.

It is an amenable number.

113211117 is a deficient number, since it is larger than the sum of its proper divisors (51798689).

113211117 is an equidigital number, since it uses as much as digits as its factorization.

113211117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001 (or 867 counting only the distinct ones).

The product of its digits is 42, while the sum is 18.

The square root of 113211117 is about 10640.0712873552. The cubic root of 113211117 is about 483.7597061530.

Adding to 113211117 its reverse (711112311), we get a palindrome (824323428).

The spelling of 113211117 in words is "one hundred thirteen million, two hundred eleven thousand, one hundred seventeen".