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113326181 is a prime number

113326181 has 2 divisors, whose sum is σ = 113326182. Its totient is φ = 113326180.

The previous prime is 113326163. The next prime is 113326183. The reversal of 113326181 is 181623311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80263681 + 33062500 = 8959^2 + 5750^2 .

It is an emirp because it is prime and its reverse (181623311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113326181 - 26 = 113326117 is a prime.

It is a super-2 number, since 2×1133261812 = 25685646600089522, which contains 22 as substring.

Together with 113326183, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 113326181.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113326183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56663090 + 56663091.

It is an arithmetic number, because the mean of its divisors is an integer number (56663091).

Almost surely, 2113326181 is an apocalyptic number.

It is an amenable number.

113326181 is a deficient number, since it is larger than the sum of its proper divisors (1).

113326181 is an equidigital number, since it uses as much as digits as its factorization.

113326181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 864, while the sum is 26.

The square root of 113326181 is about 10645.4770207821. The cubic root of 113326181 is about 483.9235430648.

Adding to 113326181 its reverse (181623311), we get a palindrome (294949492).

The spelling of 113326181 in words is "one hundred thirteen million, three hundred twenty-six thousand, one hundred eighty-one".