135220013 has 8 divisors (see below), whose sum is σ = 143762688. Its totient is φ = 126899344.

The previous prime is 135219977. The next prime is 135220051. The reversal of 135220013 is 310022531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135220013 - 2⁶ = 135219949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135219973 and 135220000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135220313) 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 7 ways as a sum of consecutive naturals, for example, 54245 + ... + 56682.

It is an arithmetic number, because the mean of its divisors is an integer number (17970336).

Almost surely, 2^135220013 is an apocalyptic number.

It is an amenable number.

135220013 is a deficient number, since it is larger than the sum of its proper divisors (8542675).

135220013 is a wasteful number, since it uses less digits than its factorization.

135220013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111003.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 135220013 is about 11628.4140363164. The cubic root of 135220013 is about 513.2713119630.

Adding to 135220013 its reverse (310022531), we get a palindrome (445242544).

The spelling of 135220013 in words is "one hundred thirty-five million, two hundred twenty thousand, thirteen".