128226343 has 4 divisors (see below), whose sum is σ = 146544400. Its totient is φ = 109908288.

The previous prime is 128226341. The next prime is 128226367. The reversal of 128226343 is 343622821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343622821 = 61 ⋅5633161.

It is not a de Polignac number, because 128226343 - 2¹ = 128226341 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 (128226341) 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 3 ways as a sum of consecutive naturals, for example, 9159018 + ... + 9159031.

It is an arithmetic number, because the mean of its divisors is an integer number (36636100).

Almost surely, 2^128226343 is an apocalyptic number.

128226343 is a deficient number, since it is larger than the sum of its proper divisors (18318057).

128226343 is an equidigital number, since it uses as much as digits as its factorization.

128226343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18318056.

The product of its digits is 13824, while the sum is 31.

The square root of 128226343 is about 11323.7071226697. The cubic root of 128226343 is about 504.2653016074.

The spelling of 128226343 in words is "one hundred twenty-eight million, two hundred twenty-six thousand, three hundred forty-three".