20013303 has 8 divisors (see below), whose sum is σ = 26848768. Its totient is φ = 13260024.

The previous prime is 20013299. The next prime is 20013311. The reversal of 20013303 is 30331002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20013303 - 2² = 20013299 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 (20013313) 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 7 ways as a sum of consecutive naturals, for example, 19975 + ... + 20952.

It is an arithmetic number, because the mean of its divisors is an integer number (3356096).

Almost surely, 2^20013303 is an apocalyptic number.

20013303 is a deficient number, since it is larger than the sum of its proper divisors (6835465).

20013303 is a wasteful number, since it uses less digits than its factorization.

20013303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41093.

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

The square root of 20013303 is about 4473.6230283742. The cubic root of 20013303 is about 271.5019314834.

Adding to 20013303 its reverse (30331002), we get a palindrome (50344305).

The spelling of 20013303 in words is "twenty million, thirteen thousand, three hundred three".