203900201 has 2 divisors, whose sum is σ = 203900202. Its totient is φ = 203900200.

The previous prime is 203900197. The next prime is 203900209. The reversal of 203900201 is 102009302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200958976 + 2941225 = 14176^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 203900201 - 2² = 203900197 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203900201.

It is not a weakly prime, because it can be changed into another prime (203900209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101950100 + 101950101.

It is an arithmetic number, because the mean of its divisors is an integer number (101950101).

Almost surely, 2^203900201 is an apocalyptic number.

It is an amenable number.

203900201 is a deficient number, since it is larger than the sum of its proper divisors (1).

203900201 is an equidigital number, since it uses as much as digits as its factorization.

203900201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 203900201 is about 14279.3627658940. The cubic root of 203900201 is about 588.5805203941.

Adding to 203900201 its reverse (102009302), we get a palindrome (305909503).

The spelling of 203900201 in words is "two hundred three million, nine hundred thousand, two hundred one".