20396203 has 2 divisors, whose sum is σ = 20396204. Its totient is φ = 20396202.

The previous prime is 20396197. The next prime is 20396227. The reversal of 20396203 is 30269302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20396203 - 2²¹ = 18299051 is a prime.

It is not a weakly prime, because it can be changed into another prime (20396003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10198101 + 10198102.

It is an arithmetic number, because the mean of its divisors is an integer number (10198102).

Almost surely, 2^20396203 is an apocalyptic number.

20396203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20396203 is an equidigital number, since it uses as much as digits as its factorization.

20396203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 20396203 is about 4516.2155617286. The cubic root of 20396203 is about 273.2224881040. Note that the first 3 decimals are identical.

The spelling of 20396203 in words is "twenty million, three hundred ninety-six thousand, two hundred three".