128318315 has 8 divisors (see below), whose sum is σ = 157737888. Its totient is φ = 100150720.

The previous prime is 128318303. The next prime is 128318317. The reversal of 128318315 is 513813821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 128318315 - 2¹⁸ = 128056171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128318317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312767 + ... + 313176.

It is an arithmetic number, because the mean of its divisors is an integer number (19717236).

Almost surely, 2^128318315 is an apocalyptic number.

128318315 is a deficient number, since it is larger than the sum of its proper divisors (29419573).

128318315 is an equidigital number, since it uses as much as digits as its factorization.

128318315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625989.

The product of its digits is 5760, while the sum is 32.

The square root of 128318315 is about 11327.7674322878. The cubic root of 128318315 is about 504.3858363929.

The spelling of 128318315 in words is "one hundred twenty-eight million, three hundred eighteen thousand, three hundred fifteen".