20313203 has 2 divisors, whose sum is σ = 20313204. Its totient is φ = 20313202.

The previous prime is 20313197. The next prime is 20313229. The reversal of 20313203 is 30231302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20313203 - 2¹⁴ = 20296819 is a prime.

It is a super-2 number, since 2×20313203² = 825252432238418, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20315203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156601 + 10156602.

It is an arithmetic number, because the mean of its divisors is an integer number (10156602).

Almost surely, 2^20313203 is an apocalyptic number.

20313203 is a deficient number, since it is larger than the sum of its proper divisors (1).

20313203 is an equidigital number, since it uses as much as digits as its factorization.

20313203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 14.

The square root of 20313203 is about 4507.0170845028. The cubic root of 20313203 is about 272.8513684180.

Adding to 20313203 its reverse (30231302), we get a palindrome (50544505).

The spelling of 20313203 in words is "twenty million, three hundred thirteen thousand, two hundred three".