68203313 has 2 divisors, whose sum is σ = 68203314. Its totient is φ = 68203312.

The previous prime is 68203309. The next prime is 68203327. The reversal of 68203313 is 31330286.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55011889 + 13191424 = 7417^2 + 3632^2 .

It is a cyclic number.

It is not a de Polignac number, because 68203313 - 2² = 68203309 is a prime.

It is not a weakly prime, because it can be changed into another prime (68208313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34101656 + 34101657.

It is an arithmetic number, because the mean of its divisors is an integer number (34101657).

Almost surely, 2^68203313 is an apocalyptic number.

It is an amenable number.

68203313 is a deficient number, since it is larger than the sum of its proper divisors (1).

68203313 is an equidigital number, since it uses as much as digits as its factorization.

68203313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 68203313 is about 8258.5297117586. The cubic root of 68203313 is about 408.5718963956.

Adding to 68203313 its reverse (31330286), we get a palindrome (99533599).

The spelling of 68203313 in words is "sixty-eight million, two hundred three thousand, three hundred thirteen".