20203133 has 2 divisors, whose sum is σ = 20203134. Its totient is φ = 20203132.

The previous prime is 20203129. The next prime is 20203151. The reversal of 20203133 is 33130202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15784729 + 4418404 = 3973^2 + 2102^2 .

It is a cyclic number.

It is not a de Polignac number, because 20203133 - 2² = 20203129 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20203933) 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, 10101566 + 10101567.

It is an arithmetic number, because the mean of its divisors is an integer number (10101567).

Almost surely, 2^20203133 is an apocalyptic number.

It is an amenable number.

20203133 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203133 is an equidigital number, since it uses as much as digits as its factorization.

20203133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 20203133 is about 4494.7895390107. The cubic root of 20203133 is about 272.3576475016.

Adding to 20203133 its reverse (33130202), we get a palindrome (53333335).

The spelling of 20203133 in words is "twenty million, two hundred three thousand, one hundred thirty-three".