128874313 has 4 divisors (see below), whose sum is σ = 134477568. Its totient is φ = 123271060.

The previous prime is 128874287. The next prime is 128874373. The reversal of 128874313 is 313478821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128874313 - 2⁵ = 128874281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128874373) 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 in 3 ways as a sum of consecutive naturals, for example, 2801593 + ... + 2801638.

It is an arithmetic number, because the mean of its divisors is an integer number (33619392).

Almost surely, 2^128874313 is an apocalyptic number.

It is an amenable number.

128874313 is a deficient number, since it is larger than the sum of its proper divisors (5603255).

128874313 is an equidigital number, since it uses as much as digits as its factorization.

128874313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5603254.

The product of its digits is 32256, while the sum is 37.

The square root of 128874313 is about 11352.2822815503. The cubic root of 128874313 is about 505.1132811256.

The spelling of 128874313 in words is "one hundred twenty-eight million, eight hundred seventy-four thousand, three hundred thirteen".