128000203 has 2 divisors, whose sum is σ = 128000204. Its totient is φ = 128000202.

The previous prime is 128000177. The next prime is 128000219. The reversal of 128000203 is 302000821.

It is a happy number.

It is an a-pointer prime, because the next prime (128000219) can be obtained adding 128000203 to its sum of digits (16).

It is a strong prime.

It is an emirp because it is prime and its reverse (302000821) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128000203 is a prime.

It is not a weakly prime, because it can be changed into another prime (128000003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64000101 + 64000102.

It is an arithmetic number, because the mean of its divisors is an integer number (64000102).

Almost surely, 2^128000203 is an apocalyptic number.

128000203 is a deficient number, since it is larger than the sum of its proper divisors (1).

128000203 is an equidigital number, since it uses as much as digits as its factorization.

128000203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 128000203 is about 11313.7174703985. The cubic root of 128000203 is about 503.9686863786.

The spelling of 128000203 in words is "one hundred twenty-eight million, two hundred three", and thus it is an aban number.