128346013 has 16 divisors (see below), whose sum is σ = 134741376. Its totient is φ = 122149440.

The previous prime is 128345999. The next prime is 128346041. The reversal of 128346013 is 310643821.

It is a cyclic number.

It is not a de Polignac number, because 128346013 - 2⁹ = 128345501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128346313) 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 15 ways as a sum of consecutive naturals, for example, 437895 + ... + 438187.

It is an arithmetic number, because the mean of its divisors is an integer number (8421336).

Almost surely, 2^128346013 is an apocalyptic number.

It is an amenable number.

128346013 is a deficient number, since it is larger than the sum of its proper divisors (6395363).

128346013 is a wasteful number, since it uses less digits than its factorization.

128346013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 128346013 is about 11328.9899373245. The cubic root of 128346013 is about 504.4221249872.

Adding to 128346013 its reverse (310643821), we get a palindrome (438989834).

The spelling of 128346013 in words is "one hundred twenty-eight million, three hundred forty-six thousand, thirteen".