208310313137 has 2 divisors, whose sum is σ = 208310313138. Its totient is φ = 208310313136.

The previous prime is 208310313073. The next prime is 208310313143. The reversal of 208310313137 is 731313013802.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160156838416 + 48153474721 = 400196^2 + 219439^2 .

It is a cyclic number.

It is not a de Polignac number, because 208310313137 - 2⁶ = 208310313073 is a prime.

It is not a weakly prime, because it can be changed into another prime (208310312137) 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, 104155156568 + 104155156569.

It is an arithmetic number, because the mean of its divisors is an integer number (104155156569).

Almost surely, 2^208310313137 is an apocalyptic number.

It is an amenable number.

208310313137 is a deficient number, since it is larger than the sum of its proper divisors (1).

208310313137 is an equidigital number, since it uses as much as digits as its factorization.

208310313137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 32.

Adding to 208310313137 its reverse (731313013802), we get a palindrome (939623326939).

The spelling of 208310313137 in words is "two hundred eight billion, three hundred ten million, three hundred thirteen thousand, one hundred thirty-seven".