20885303 has 2 divisors, whose sum is σ = 20885304. Its totient is φ = 20885302.

The previous prime is 20885287. The next prime is 20885317. The reversal of 20885303 is 30358802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20885303 - 2⁴ = 20885287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20885323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10442651 + 10442652.

It is an arithmetic number, because the mean of its divisors is an integer number (10442652).

Almost surely, 2^20885303 is an apocalyptic number.

20885303 is a deficient number, since it is larger than the sum of its proper divisors (1).

20885303 is an equidigital number, since it uses as much as digits as its factorization.

20885303 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 20885303 is about 4570.0440916910. The cubic root of 20885303 is about 275.3892141651.

The spelling of 20885303 in words is "twenty million, eight hundred eighty-five thousand, three hundred three".