128348237 has 2 divisors, whose sum is σ = 128348238. Its totient is φ = 128348236.

The previous prime is 128348221. The next prime is 128348243. The reversal of 128348237 is 732843821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 124791241 + 3556996 = 11171^2 + 1886^2 .

It is a cyclic number.

It is not a de Polignac number, because 128348237 - 2⁴ = 128348221 is a prime.

It is a Chen prime.

It is equal to p_7289642 and since 128348237 and 7289642 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128348237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128348837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64174118 + 64174119.

It is an arithmetic number, because the mean of its divisors is an integer number (64174119).

Almost surely, 2^128348237 is an apocalyptic number.

It is an amenable number.

128348237 is a deficient number, since it is larger than the sum of its proper divisors (1).

128348237 is an equidigital number, since it uses as much as digits as its factorization.

128348237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64512, while the sum is 38.

The square root of 128348237 is about 11329.0880921635. The cubic root of 128348237 is about 504.4250385391.

The spelling of 128348237 in words is "one hundred twenty-eight million, three hundred forty-eight thousand, two hundred thirty-seven".