20204113 has 2 divisors, whose sum is σ = 20204114. Its totient is φ = 20204112.

The previous prime is 20204101. The next prime is 20204117. The reversal of 20204113 is 31140202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10575504 + 9628609 = 3252^2 + 3103^2 .

It is a cyclic number.

It is not a de Polignac number, because 20204113 - 2⁵ = 20204081 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20204093 and 20204102.

It is not a weakly prime, because it can be changed into another prime (20204117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10102056 + 10102057.

It is an arithmetic number, because the mean of its divisors is an integer number (10102057).

Almost surely, 2^20204113 is an apocalyptic number.

It is an amenable number.

20204113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20204113 is an equidigital number, since it uses as much as digits as its factorization.

20204113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20204113 is about 4494.8985528041. The cubic root of 20204113 is about 272.3620512110.

Adding to 20204113 its reverse (31140202), we get a palindrome (51344315).

The spelling of 20204113 in words is "twenty million, two hundred four thousand, one hundred thirteen".