20970203 has 2 divisors, whose sum is σ = 20970204. Its totient is φ = 20970202.

The previous prime is 20970151. The next prime is 20970221. The reversal of 20970203 is 30207902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20970203 - 2¹⁴ = 20953819 is a prime.

It is a super-2 number, since 2×20970203² = 879498827722418, which contains 22 as substring.

It is equal to p_1328162 and since 20970203 and 1328162 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20970223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10485101 + 10485102.

It is an arithmetic number, because the mean of its divisors is an integer number (10485102).

Almost surely, 2^20970203 is an apocalyptic number.

20970203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20970203 is an equidigital number, since it uses as much as digits as its factorization.

20970203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 20970203 is about 4579.3234216421. The cubic root of 20970203 is about 275.7618675175.

The spelling of 20970203 in words is "twenty million, nine hundred seventy thousand, two hundred three".