318740129 has 2 divisors, whose sum is σ = 318740130. Its totient is φ = 318740128.

The previous prime is 318740113. The next prime is 318740159. The reversal of 318740129 is 921047813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 318693904 + 46225 = 17852^2 + 215^2 .

It is a cyclic number.

It is not a de Polignac number, because 318740129 - 2⁴ = 318740113 is a prime.

It is not a weakly prime, because it can be changed into another prime (318740159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159370064 + 159370065.

It is an arithmetic number, because the mean of its divisors is an integer number (159370065).

Almost surely, 2^318740129 is an apocalyptic number.

It is an amenable number.

318740129 is a deficient number, since it is larger than the sum of its proper divisors (1).

318740129 is an equidigital number, since it uses as much as digits as its factorization.

318740129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 318740129 is about 17853.2946259227. The cubic root of 318740129 is about 683.0915525874.

The spelling of 318740129 in words is "three hundred eighteen million, seven hundred forty thousand, one hundred twenty-nine".