128083213 has 2 divisors, whose sum is σ = 128083214. Its totient is φ = 128083212.

The previous prime is 128083201. The next prime is 128083217. The reversal of 128083213 is 312380821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93954249 + 34128964 = 9693^2 + 5842^2 .

It is an emirp because it is prime and its reverse (312380821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 128083213 - 2⁹ = 128082701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128083217) 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 as a sum of consecutive naturals, namely, 64041606 + 64041607.

It is an arithmetic number, because the mean of its divisors is an integer number (64041607).

Almost surely, 2^128083213 is an apocalyptic number.

It is an amenable number.

128083213 is a deficient number, since it is larger than the sum of its proper divisors (1).

128083213 is an equidigital number, since it uses as much as digits as its factorization.

128083213 is an odious number, because the sum of its binary digits is odd.

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

The square root of 128083213 is about 11317.3854312734. The cubic root of 128083213 is about 504.0776065197.

The spelling of 128083213 in words is "one hundred twenty-eight million, eighty-three thousand, two hundred thirteen".