20131303 has 2 divisors, whose sum is σ = 20131304. Its totient is φ = 20131302.

The previous prime is 20131297. The next prime is 20131313. The reversal of 20131303 is 30313102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20131303 - 2⁵ = 20131271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20131313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10065651 + 10065652.

It is an arithmetic number, because the mean of its divisors is an integer number (10065652).

Almost surely, 2^20131303 is an apocalyptic number.

20131303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20131303 is an equidigital number, since it uses as much as digits as its factorization.

20131303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 20131303 is about 4486.7920611501. The cubic root of 20131303 is about 272.0344850668.

Adding to 20131303 its reverse (30313102), we get a palindrome (50444405).

The spelling of 20131303 in words is "twenty million, one hundred thirty-one thousand, three hundred three".