128312002 has 16 divisors (see below), whose sum is σ = 236884032. Its totient is φ = 50760720.

The previous prime is 128311999. The next prime is 128312003. The reversal of 128312002 is 200213821.

It is not an unprimeable number, because it can be changed into a prime (128312003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 352324 + ... + 352687.

It is an arithmetic number, because the mean of its divisors is an integer number (14805252).

Almost surely, 2^128312002 is an apocalyptic number.

128312002 is a deficient number, since it is larger than the sum of its proper divisors (108572030).

128312002 is a wasteful number, since it uses less digits than its factorization.

128312002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705033.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 128312002 is about 11327.4887773063. The cubic root of 128312002 is about 504.3775646716.

Adding to 128312002 its reverse (200213821), we get a palindrome (328525823).

The spelling of 128312002 in words is "one hundred twenty-eight million, three hundred twelve thousand, two".