113230120181 has 2 divisors, whose sum is σ = 113230120182. Its totient is φ = 113230120180.

The previous prime is 113230120163. The next prime is 113230120183. The reversal of 113230120181 is 181021032311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59150617681 + 54079502500 = 243209^2 + 232550^2 .

It is a cyclic number.

It is not a de Polignac number, because 113230120181 - 2¹⁸ = 113229858037 is a prime.

It is a super-2 number, since 2×113230120181² (a number of 23 digits) contains 22 as substring.

Together with 113230120183, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113230120183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56615060090 + 56615060091.

It is an arithmetic number, because the mean of its divisors is an integer number (56615060091).

Almost surely, 2^113230120181 is an apocalyptic number.

It is an amenable number.

113230120181 is a deficient number, since it is larger than the sum of its proper divisors (1).

113230120181 is an equidigital number, since it uses as much as digits as its factorization.

113230120181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 113230120181 its reverse (181021032311), we get a palindrome (294251152492).

The spelling of 113230120181 in words is "one hundred thirteen billion, two hundred thirty million, one hundred twenty thousand, one hundred eighty-one".