128313907 has 2 divisors, whose sum is σ = 128313908. Its totient is φ = 128313906.

The previous prime is 128313877. The next prime is 128313919. The reversal of 128313907 is 709313821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128313907 - 2¹⁹ = 127789619 is a prime.

It is not a weakly prime, because it can be changed into another prime (128313937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64156953 + 64156954.

It is an arithmetic number, because the mean of its divisors is an integer number (64156954).

Almost surely, 2^128313907 is an apocalyptic number.

128313907 is a deficient number, since it is larger than the sum of its proper divisors (1).

128313907 is an equidigital number, since it uses as much as digits as its factorization.

128313907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 128313907 is about 11327.5728644754. The cubic root of 128313907 is about 504.3800607606.

The spelling of 128313907 in words is "one hundred twenty-eight million, three hundred thirteen thousand, nine hundred seven".