68230013 has 2 divisors, whose sum is σ = 68230014. Its totient is φ = 68230012.

The previous prime is 68230003. The next prime is 68230033. The reversal of 68230013 is 31003286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61889689 + 6340324 = 7867^2 + 2518^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68230013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68230003) 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, 34115006 + 34115007.

It is an arithmetic number, because the mean of its divisors is an integer number (34115007).

Almost surely, 2^68230013 is an apocalyptic number.

It is an amenable number.

68230013 is a deficient number, since it is larger than the sum of its proper divisors (1).

68230013 is an equidigital number, since it uses as much as digits as its factorization.

68230013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 68230013 is about 8260.1460640839. The cubic root of 68230013 is about 408.6252048833.

Adding to 68230013 its reverse (31003286), we get a palindrome (99233299).

The spelling of 68230013 in words is "sixty-eight million, two hundred thirty thousand, thirteen".