20113163 has 16 divisors (see below), whose sum is σ = 23930880. Its totient is φ = 16544736.

The previous prime is 20113139. The next prime is 20113169. The reversal of 20113163 is 36131102.

It is a cyclic number.

It is not a de Polignac number, because 20113163 - 2⁶ = 20113099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20113169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19970 + ... + 20952.

It is an arithmetic number, because the mean of its divisors is an integer number (1495680).

Almost surely, 2^20113163 is an apocalyptic number.

20113163 is a deficient number, since it is larger than the sum of its proper divisors (3817717).

20113163 is an equidigital number, since it uses as much as digits as its factorization.

20113163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 20113163 is about 4484.7701167395. The cubic root of 20113163 is about 271.9527518494.

Adding to 20113163 its reverse (36131102), we get a palindrome (56244265).

The spelling of 20113163 in words is "twenty million, one hundred thirteen thousand, one hundred sixty-three".