67541231 has 2 divisors, whose sum is σ = 67541232. Its totient is φ = 67541230.

The previous prime is 67541189. The next prime is 67541233. The reversal of 67541231 is 13214576.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67541231 - 2¹⁸ = 67279087 is a prime.

It is a super-3 number, since 3×67541231³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

Together with 67541233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 67541194 and 67541203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67541233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33770615 + 33770616.

It is an arithmetic number, because the mean of its divisors is an integer number (33770616).

Almost surely, 2^67541231 is an apocalyptic number.

67541231 is a deficient number, since it is larger than the sum of its proper divisors (1).

67541231 is an equidigital number, since it uses as much as digits as its factorization.

67541231 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5040, while the sum is 29.

The square root of 67541231 is about 8218.3472182672. The cubic root of 67541231 is about 407.2455279506.

The spelling of 67541231 in words is "sixty-seven million, five hundred forty-one thousand, two hundred thirty-one".