20203118107 has 2 divisors, whose sum is σ = 20203118108. Its totient is φ = 20203118106.

The previous prime is 20203118099. The next prime is 20203118161. The reversal of 20203118107 is 70181130202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20203118107 - 2³ = 20203118099 is a prime.

It is not a weakly prime, because it can be changed into another prime (20203118207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10101559053 + 10101559054.

It is an arithmetic number, because the mean of its divisors is an integer number (10101559054).

Almost surely, 2^20203118107 is an apocalyptic number.

20203118107 is a deficient number, since it is larger than the sum of its proper divisors (1).

20203118107 is an equidigital number, since it uses as much as digits as its factorization.

20203118107 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 20203118107 its reverse (70181130202), we get a palindrome (90384248309).

The spelling of 20203118107 in words is "twenty billion, two hundred three million, one hundred eighteen thousand, one hundred seven".