272218231 has 2 divisors, whose sum is σ = 272218232. Its totient is φ = 272218230.

The previous prime is 272218217. The next prime is 272218237. The reversal of 272218231 is 132812272.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 272218231 - 2⁷ = 272218103 is a prime.

It is a super-2 number, since 2×272218231² = 148205530577538722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 272218231.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (272218237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 136109115 + 136109116.

It is an arithmetic number, because the mean of its divisors is an integer number (136109116).

Almost surely, 2^272218231 is an apocalyptic number.

272218231 is a deficient number, since it is larger than the sum of its proper divisors (1).

272218231 is an equidigital number, since it uses as much as digits as its factorization.

272218231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 272218231 is about 16499.0372749443. The cubic root of 272218231 is about 648.0955942583.

The spelling of 272218231 in words is "two hundred seventy-two million, two hundred eighteen thousand, two hundred thirty-one".