128900323 has 2 divisors, whose sum is σ = 128900324. Its totient is φ = 128900322.

The previous prime is 128900251. The next prime is 128900327. The reversal of 128900323 is 323009821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128900323 - 2⁹ = 128899811 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 128900291 and 128900300.

It is not a weakly prime, because it can be changed into another prime (128900327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64450161 + 64450162.

It is an arithmetic number, because the mean of its divisors is an integer number (64450162).

Almost surely, 2^128900323 is an apocalyptic number.

128900323 is a deficient number, since it is larger than the sum of its proper divisors (1).

128900323 is an equidigital number, since it uses as much as digits as its factorization.

128900323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 128900323 is about 11353.4278083758. The cubic root of 128900323 is about 505.1472602596.

The spelling of 128900323 in words is "one hundred twenty-eight million, nine hundred thousand, three hundred twenty-three".