68103313 has 2 divisors, whose sum is σ = 68103314. Its totient is φ = 68103312.

The previous prime is 68103307. The next prime is 68103317. The reversal of 68103313 is 31330186.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63872064 + 4231249 = 7992^2 + 2057^2 .

It is a cyclic number.

It is not a de Polignac number, because 68103313 - 2²⁵ = 34548881 is a prime.

It is a super-2 number, since 2×68103313² = 9276122483151938, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68103317) 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, 34051656 + 34051657.

It is an arithmetic number, because the mean of its divisors is an integer number (34051657).

Almost surely, 2^68103313 is an apocalyptic number.

It is an amenable number.

68103313 is a deficient number, since it is larger than the sum of its proper divisors (1).

68103313 is an equidigital number, since it uses as much as digits as its factorization.

68103313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 68103313 is about 8252.4731444580. The cubic root of 68103313 is about 408.3721154150.

Adding to 68103313 its reverse (31330186), we get a palindrome (99433499).

The spelling of 68103313 in words is "sixty-eight million, one hundred three thousand, three hundred thirteen".