128396343 has 4 divisors (see below), whose sum is σ = 171195128. Its totient is φ = 85597560.

The previous prime is 128396341. The next prime is 128396353. The reversal of 128396343 is 343693821.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 128396343 - 2¹ = 128396341 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 (128396341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21399388 + ... + 21399393.

It is an arithmetic number, because the mean of its divisors is an integer number (42798782).

Almost surely, 2^128396343 is an apocalyptic number.

128396343 is a deficient number, since it is larger than the sum of its proper divisors (42798785).

128396343 is an equidigital number, since it uses as much as digits as its factorization.

128396343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42798784.

The product of its digits is 93312, while the sum is 39.

The square root of 128396343 is about 11331.2110120675. The cubic root of 128396343 is about 504.4880515845.

The spelling of 128396343 in words is "one hundred twenty-eight million, three hundred ninety-six thousand, three hundred forty-three".