27967231 has 2 divisors, whose sum is σ = 27967232. Its totient is φ = 27967230.

The previous prime is 27967213. The next prime is 27967237. The reversal of 27967231 is 13276972.

Together with previous prime (27967213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27967231 is a prime.

It is a super-2 number, since 2×27967231² = 1564332019614722, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27967237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13983615 + 13983616.

It is an arithmetic number, because the mean of its divisors is an integer number (13983616).

Almost surely, 2^27967231 is an apocalyptic number.

27967231 is a deficient number, since it is larger than the sum of its proper divisors (1).

27967231 is an equidigital number, since it uses as much as digits as its factorization.

27967231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 37.

The square root of 27967231 is about 5288.4053362049. The cubic root of 27967231 is about 303.5403914408.

The spelling of 27967231 in words is "twenty-seven million, nine hundred sixty-seven thousand, two hundred thirty-one".