227340181 has 2 divisors, whose sum is σ = 227340182. Its totient is φ = 227340180.

The previous prime is 227340131. The next prime is 227340209. The reversal of 227340181 is 181043722.

It is an a-pointer prime, because the next prime (227340209) can be obtained adding 227340181 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 223502500 + 3837681 = 14950^2 + 1959^2 .

It is a cyclic number.

It is not a de Polignac number, because 227340181 - 2⁷ = 227340053 is a prime.

It is a super-2 number, since 2×227340181² = 103367115794225522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (227340131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113670090 + 113670091.

It is an arithmetic number, because the mean of its divisors is an integer number (113670091).

Almost surely, 2^227340181 is an apocalyptic number.

It is an amenable number.

227340181 is a deficient number, since it is larger than the sum of its proper divisors (1).

227340181 is an equidigital number, since it uses as much as digits as its factorization.

227340181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 227340181 is about 15077.8042499563. The cubic root of 227340181 is about 610.3215907078.

The spelling of 227340181 in words is "two hundred twenty-seven million, three hundred forty thousand, one hundred eighty-one".