20107135 has 4 divisors (see below), whose sum is σ = 24128568. Its totient is φ = 16085704.

The previous prime is 20107133. The next prime is 20107151. The reversal of 20107135 is 53170102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20107135 - 2¹ = 20107133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20107133) 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 in 3 ways as a sum of consecutive naturals, for example, 2010709 + ... + 2010718.

It is an arithmetic number, because the mean of its divisors is an integer number (6032142).

Almost surely, 2^20107135 is an apocalyptic number.

20107135 is a deficient number, since it is larger than the sum of its proper divisors (4021433).

20107135 is an equidigital number, since it uses as much as digits as its factorization.

20107135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4021432.

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 20107135 is about 4484.0980140938. The cubic root of 20107135 is about 271.9255806715.

Adding to 20107135 its reverse (53170102), we get a palindrome (73277237).

The spelling of 20107135 in words is "twenty million, one hundred seven thousand, one hundred thirty-five".