128960213 has 2 divisors, whose sum is σ = 128960214. Its totient is φ = 128960212.

The previous prime is 128960177. The next prime is 128960243. The reversal of 128960213 is 312069821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116165284 + 12794929 = 10778^2 + 3577^2 .

It is a cyclic number.

It is not a de Polignac number, because 128960213 - 2²⁴ = 112182997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 128960213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128960243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64480106 + 64480107.

It is an arithmetic number, because the mean of its divisors is an integer number (64480107).

Almost surely, 2^128960213 is an apocalyptic number.

It is an amenable number.

128960213 is a deficient number, since it is larger than the sum of its proper divisors (1).

128960213 is an equidigital number, since it uses as much as digits as its factorization.

128960213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 128960213 is about 11356.0650315151. The cubic root of 128960213 is about 505.2254824199.

The spelling of 128960213 in words is "one hundred twenty-eight million, nine hundred sixty thousand, two hundred thirteen".