135531535 has 8 divisors (see below), whose sum is σ = 167884416. Its totient is φ = 104927520.

The previous prime is 135531523. The next prime is 135531551. The reversal of 135531535 is 535135531.

It is a happy number.

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

It is not a de Polignac number, because 135531535 - 2¹¹ = 135529487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135531497 and 135531506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 437044 + ... + 437353.

It is an arithmetic number, because the mean of its divisors is an integer number (20985552).

Almost surely, 2^135531535 is an apocalyptic number.

135531535 is a deficient number, since it is larger than the sum of its proper divisors (32352881).

135531535 is an equidigital number, since it uses as much as digits as its factorization.

135531535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874433.

The product of its digits is 16875, while the sum is 31.

The square root of 135531535 is about 11641.8011922554. The cubic root of 135531535 is about 513.6651705081.

The spelling of 135531535 in words is "one hundred thirty-five million, five hundred thirty-one thousand, five hundred thirty-five".