20130135 has 16 divisors (see below), whose sum is σ = 32464896. Its totient is φ = 10650528.

The previous prime is 20130079. The next prime is 20130163. The reversal of 20130135 is 53103102.

It is a happy number.

It is not a de Polignac number, because 20130135 - 2¹⁰ = 20129111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

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, 3379 + ... + 7188.

It is an arithmetic number, because the mean of its divisors is an integer number (2029056).

Almost surely, 2^20130135 is an apocalyptic number.

20130135 is a deficient number, since it is larger than the sum of its proper divisors (12334761).

20130135 is a wasteful number, since it uses less digits than its factorization.

20130135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10702.

The product of its (nonzero) digits is 90, while the sum is 15.

The square root of 20130135 is about 4486.6618994526. The cubic root of 20130135 is about 272.0292239001.

Adding to 20130135 its reverse (53103102), we get a palindrome (73233237).

The spelling of 20130135 in words is "twenty million, one hundred thirty thousand, one hundred thirty-five".