204001403 has 2 divisors, whose sum is σ = 204001404. Its totient is φ = 204001402.

The previous prime is 204001367. The next prime is 204001433. The reversal of 204001403 is 304100402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204001403 - 2⁶ = 204001339 is a prime.

It is not a weakly prime, because it can be changed into another prime (204001433) 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, 102000701 + 102000702.

It is an arithmetic number, because the mean of its divisors is an integer number (102000702).

Almost surely, 2^204001403 is an apocalyptic number.

204001403 is a deficient number, since it is larger than the sum of its proper divisors (1).

204001403 is an equidigital number, since it uses as much as digits as its factorization.

204001403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 204001403 is about 14282.9059718252. The cubic root of 204001403 is about 588.6778812166.

Adding to 204001403 its reverse (304100402), we get a palindrome (508101805).

The spelling of 204001403 in words is "two hundred four million, one thousand, four hundred three".