387340313 has 2 divisors, whose sum is σ = 387340314. Its totient is φ = 387340312.

The previous prime is 387340279. The next prime is 387340357. The reversal of 387340313 is 313043783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 323532169 + 63808144 = 17987^2 + 7988^2 .

It is a cyclic number.

It is not a de Polignac number, because 387340313 - 2⁶ = 387340249 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387340313.

It is not a weakly prime, because it can be changed into another prime (389340313) 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, 193670156 + 193670157.

It is an arithmetic number, because the mean of its divisors is an integer number (193670157).

Almost surely, 2^387340313 is an apocalyptic number.

It is an amenable number.

387340313 is a deficient number, since it is larger than the sum of its proper divisors (1).

387340313 is an equidigital number, since it uses as much as digits as its factorization.

387340313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 387340313 is about 19680.9632132170. The cubic root of 387340313 is about 728.9497081009.

The spelling of 387340313 in words is "three hundred eighty-seven million, three hundred forty thousand, three hundred thirteen".