113855181 has 8 divisors (see below), whose sum is σ = 165607584. Its totient is φ = 69003120.

The previous prime is 113855149. The next prime is 113855207. The reversal of 113855181 is 181558311.

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

It is not a de Polignac number, because 113855181 - 2⁵ = 113855149 is a prime.

It is a super-2 number, since 2×113855181² = 25926004481085522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 3450157 = 113855181 / (1 + 1 + 3 + 8 + 5 + 5 + 1 + 8 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113855101) 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, 1725046 + ... + 1725111.

It is an arithmetic number, because the mean of its divisors is an integer number (20700948).

Almost surely, 2^113855181 is an apocalyptic number.

113855181 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

113855181 is a deficient number, since it is larger than the sum of its proper divisors (51752403).

113855181 is a wasteful number, since it uses less digits than its factorization.

113855181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3450171.

The product of its digits is 4800, while the sum is 33.

The square root of 113855181 is about 10670.2943258375. The cubic root of 113855181 is about 484.6753500985.

The spelling of 113855181 in words is "one hundred thirteen million, eight hundred fifty-five thousand, one hundred eighty-one".