135021311 has 8 divisors (see below), whose sum is σ = 137648880. Its totient is φ = 132414912.

The previous prime is 135021269. The next prime is 135021373. The reversal of 135021311 is 113120531.

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 135021311 - 2¹⁰ = 135020287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135021311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135021611) 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, 7901 + ... + 18233.

It is an arithmetic number, because the mean of its divisors is an integer number (17206110).

Almost surely, 2^135021311 is an apocalyptic number.

135021311 is a deficient number, since it is larger than the sum of its proper divisors (2627569).

135021311 is a wasteful number, since it uses less digits than its factorization.

135021311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10585.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 135021311 is about 11619.8670818560. The cubic root of 135021311 is about 513.0197761364.

Adding to 135021311 its reverse (113120531), we get a palindrome (248141842).

The spelling of 135021311 in words is "one hundred thirty-five million, twenty-one thousand, three hundred eleven".