20003133 has 4 divisors (see below), whose sum is σ = 26670848. Its totient is φ = 13335420.

The previous prime is 20003131. The next prime is 20003149. The reversal of 20003133 is 33130002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20003133 - 2¹ = 20003131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003131) 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 in 3 ways as a sum of consecutive naturals, for example, 3333853 + ... + 3333858.

It is an arithmetic number, because the mean of its divisors is an integer number (6667712).

Almost surely, 2^20003133 is an apocalyptic number.

It is an amenable number.

20003133 is a deficient number, since it is larger than the sum of its proper divisors (6667715).

20003133 is an equidigital number, since it uses as much as digits as its factorization.

20003133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667714.

The product of its (nonzero) digits is 54, while the sum is 12.

The square root of 20003133 is about 4472.4862213315. The cubic root of 20003133 is about 271.4559347034.

Adding to 20003133 its reverse (33130002), we get a palindrome (53133135).

The spelling of 20003133 in words is "twenty million, three thousand, one hundred thirty-three".