68244313 has 2 divisors, whose sum is σ = 68244314. Its totient is φ = 68244312.

The previous prime is 68244283. The next prime is 68244331. The reversal of 68244313 is 31344286.

Together with next prime (68244331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64192144 + 4052169 = 8012^2 + 2013^2 .

It is a cyclic number.

It is not a de Polignac number, because 68244313 - 2¹³ = 68236121 is a prime.

It is not a weakly prime, because it can be changed into another prime (68644313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34122156 + 34122157.

It is an arithmetic number, because the mean of its divisors is an integer number (34122157).

Almost surely, 2^68244313 is an apocalyptic number.

It is an amenable number.

68244313 is a deficient number, since it is larger than the sum of its proper divisors (1).

68244313 is an equidigital number, since it uses as much as digits as its factorization.

68244313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 31.

The square root of 68244313 is about 8261.0116208610. The cubic root of 68244313 is about 408.6537501525.

Adding to 68244313 its reverse (31344286), we get a palindrome (99588599).

The spelling of 68244313 in words is "sixty-eight million, two hundred forty-four thousand, three hundred thirteen".