67288231 has 2 divisors, whose sum is σ = 67288232. Its totient is φ = 67288230.

The previous prime is 67288229. The next prime is 67288241. The reversal of 67288231 is 13288276.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67288231 - 2¹ = 67288229 is a prime.

It is a super-2 number, since 2×67288231² = 9055412062218722, which contains 22 as substring.

Together with 67288229, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67288241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33644115 + 33644116.

It is an arithmetic number, because the mean of its divisors is an integer number (33644116).

Almost surely, 2^67288231 is an apocalyptic number.

67288231 is a deficient number, since it is larger than the sum of its proper divisors (1).

67288231 is an equidigital number, since it uses as much as digits as its factorization.

67288231 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 37.

The square root of 67288231 is about 8202.9403874464. The cubic root of 67288231 is about 406.7363967890.

The spelling of 67288231 in words is "sixty-seven million, two hundred eighty-eight thousand, two hundred thirty-one".