128234611 has 4 divisors (see below), whose sum is σ = 128263824. Its totient is φ = 128205400.

The previous prime is 128234599. The next prime is 128234633. The reversal of 128234611 is 116432821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 116432821 = 37 ⋅3146833.

It is a cyclic number.

It is not a de Polignac number, because 128234611 - 2²³ = 119846003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128234611.

It is not an unprimeable number, because it can be changed into a prime (128234641) 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, 6535 + ... + 17296.

It is an arithmetic number, because the mean of its divisors is an integer number (32065956).

Almost surely, 2^128234611 is an apocalyptic number.

128234611 is a deficient number, since it is larger than the sum of its proper divisors (29213).

128234611 is an equidigital number, since it uses as much as digits as its factorization.

128234611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29212.

The product of its digits is 2304, while the sum is 28.

The square root of 128234611 is about 11324.0721915749. The cubic root of 128234611 is about 504.2761396713.

The spelling of 128234611 in words is "one hundred twenty-eight million, two hundred thirty-four thousand, six hundred eleven".