128311012 has 12 divisors (see below), whose sum is σ = 224638960. Its totient is φ = 64128456.

The previous prime is 128310991. The next prime is 128311031. The reversal of 128311012 is 210113821.

It is an unprimeable number.

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, 7039 + ... + 17497.

Almost surely, 2^128311012 is an apocalyptic number.

It is an amenable number.

128311012 is a deficient number, since it is larger than the sum of its proper divisors (96327948).

128311012 is a wasteful number, since it uses less digits than its factorization.

128311012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13530 (or 13528 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

The square root of 128311012 is about 11327.4450782160. The cubic root of 128311012 is about 504.3762674818.

Adding to 128311012 its reverse (210113821), we get a palindrome (338424833).

The spelling of 128311012 in words is "one hundred twenty-eight million, three hundred eleven thousand, twelve".