128631333 has 16 divisors (see below), whose sum is σ = 182027520. Its totient is φ = 80518656.

The previous prime is 128631331. The next prime is 128631337. The reversal of 128631333 is 333136821.

It is not a de Polignac number, because 128631333 - 2¹ = 128631331 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128631333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128631331) 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 in 15 ways as a sum of consecutive naturals, for example, 20548 + ... + 26066.

It is an arithmetic number, because the mean of its divisors is an integer number (11376720).

Almost surely, 2^128631333 is an apocalyptic number.

It is an amenable number.

128631333 is a deficient number, since it is larger than the sum of its proper divisors (53396187).

128631333 is a wasteful number, since it uses less digits than its factorization.

128631333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5996.

The product of its digits is 7776, while the sum is 30.

The square root of 128631333 is about 11341.5754196672. The cubic root of 128631333 is about 504.7956340671.

It can be divided in two parts, 12863 and 1333, that added together give a triangular number (14196 = T₁₆₈).

The spelling of 128631333 in words is "one hundred twenty-eight million, six hundred thirty-one thousand, three hundred thirty-three".