113117181 has 8 divisors (see below), whose sum is σ = 152158080. Its totient is φ = 74743872.

The previous prime is 113117161. The next prime is 113117189. The reversal of 113117181 is 181711311.

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

It is not a de Polignac number, because 113117181 - 2⁶ = 113117117 is a prime.

It is a super-2 number, since 2×113117181² = 25590993274773522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113117189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166501 + ... + 167178.

It is an arithmetic number, because the mean of its divisors is an integer number (19019760).

Almost surely, 2^113117181 is an apocalyptic number.

It is an amenable number.

113117181 is a deficient number, since it is larger than the sum of its proper divisors (39040899).

113117181 is a wasteful number, since it uses less digits than its factorization.

113117181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333795.

The product of its digits is 168, while the sum is 24.

The square root of 113117181 is about 10635.6561151628. The cubic root of 113117181 is about 483.6258705744.

Adding to 113117181 its reverse (181711311), we get a palindrome (294828492).

The spelling of 113117181 in words is "one hundred thirteen million, one hundred seventeen thousand, one hundred eighty-one".