68287231 has 2 divisors, whose sum is σ = 68287232. Its totient is φ = 68287230.

The previous prime is 68287201. The next prime is 68287277. The reversal of 68287231 is 13278286.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68287231 - 2⁷ = 68287103 is a prime.

It is a super-2 number, since 2×68287231² = 9326291835294722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68287201) 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, 34143615 + 34143616.

It is an arithmetic number, because the mean of its divisors is an integer number (34143616).

Almost surely, 2^68287231 is an apocalyptic number.

68287231 is a deficient number, since it is larger than the sum of its proper divisors (1).

68287231 is an equidigital number, since it uses as much as digits as its factorization.

68287231 is an odious number, because the sum of its binary digits is odd.

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

The square root of 68287231 is about 8263.6088363378. The cubic root of 68287231 is about 408.7393979550.

The spelling of 68287231 in words is "sixty-eight million, two hundred eighty-seven thousand, two hundred thirty-one".