20873003 has 2 divisors, whose sum is σ = 20873004. Its totient is φ = 20873002.

The previous prime is 20872987. The next prime is 20873051. The reversal of 20873003 is 30037802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20873003 - 2⁴ = 20872987 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20873003.

It is not a weakly prime, because it can be changed into another prime (20873063) 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, 10436501 + 10436502.

It is an arithmetic number, because the mean of its divisors is an integer number (10436502).

Almost surely, 2^20873003 is an apocalyptic number.

20873003 is a deficient number, since it is larger than the sum of its proper divisors (1).

20873003 is an equidigital number, since it uses as much as digits as its factorization.

20873003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 20873003 is about 4568.6981734407. The cubic root of 20873003 is about 275.3351418108.

The spelling of 20873003 in words is "twenty million, eight hundred seventy-three thousand, three".