20203273 has 2 divisors, whose sum is σ = 20203274. Its totient is φ = 20203272.

The previous prime is 20203243. The next prime is 20203277. The reversal of 20203273 is 37230202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15657849 + 4545424 = 3957^2 + 2132^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20203273 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20203273.

It is not a weakly prime, because it can be changed into another prime (20203277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101636 + 10101637.

It is an arithmetic number, because the mean of its divisors is an integer number (10101637).

Almost surely, 2^20203273 is an apocalyptic number.

It is an amenable number.

20203273 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203273 is an equidigital number, since it uses as much as digits as its factorization.

20203273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 19.

The square root of 20203273 is about 4494.8051125716. The cubic root of 20203273 is about 272.3582766117.

Adding to 20203273 its reverse (37230202), we get a palindrome (57433475).

The spelling of 20203273 in words is "twenty million, two hundred three thousand, two hundred seventy-three".