231227239 has 2 divisors, whose sum is σ = 231227240. Its totient is φ = 231227238.

The previous prime is 231227221. The next prime is 231227273. The reversal of 231227239 is 932722132.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 231227239 - 2¹⁷ = 231096167 is a prime.

It is equal to p_12706393 and since 231227239 and 12706393 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231227239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231227219) 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, 115613619 + 115613620.

It is an arithmetic number, because the mean of its divisors is an integer number (115613620).

Almost surely, 2^231227239 is an apocalyptic number.

231227239 is a deficient number, since it is larger than the sum of its proper divisors (1).

231227239 is an equidigital number, since it uses as much as digits as its factorization.

231227239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 231227239 is about 15206.1579302597. The cubic root of 231227239 is about 613.7803744700.

The spelling of 231227239 in words is "two hundred thirty-one million, two hundred twenty-seven thousand, two hundred thirty-nine".