113130181 has 2 divisors, whose sum is σ = 113130182. Its totient is φ = 113130180.

The previous prime is 113130179. The next prime is 113130209. The reversal of 113130181 is 181031311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 112148100 + 982081 = 10590^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 113130181 - 2¹ = 113130179 is a prime.

It is a super-2 number, since 2×113130181² = 25596875706185522, which contains 22 as substring.

Together with 113130179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113130151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56565090 + 56565091.

It is an arithmetic number, because the mean of its divisors is an integer number (56565091).

Almost surely, 2^113130181 is an apocalyptic number.

It is an amenable number.

113130181 is a deficient number, since it is larger than the sum of its proper divisors (1).

113130181 is an equidigital number, since it uses as much as digits as its factorization.

113130181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 113130181 is about 10636.2672493690. The cubic root of 113130181 is about 483.6443967771.

Adding to 113130181 its reverse (181031311), we get a palindrome (294161492).

It can be divided in two parts, 113130 and 181, that added together give a palindrome (113311).

The spelling of 113130181 in words is "one hundred thirteen million, one hundred thirty thousand, one hundred eighty-one".