20940203 has 2 divisors, whose sum is σ = 20940204. Its totient is φ = 20940202.

The previous prime is 20940193. The next prime is 20940251. The reversal of 20940203 is 30204902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20940203 - 2¹⁸ = 20678059 is a prime.

It is not a weakly prime, because it can be changed into another prime (20940253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10470101 + 10470102.

It is an arithmetic number, because the mean of its divisors is an integer number (10470102).

Almost surely, 2^20940203 is an apocalyptic number.

20940203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20940203 is an equidigital number, since it uses as much as digits as its factorization.

20940203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 20940203 is about 4576.0466562307. The cubic root of 20940203 is about 275.6303029953.

The spelling of 20940203 in words is "twenty million, nine hundred forty thousand, two hundred three".