135606531 has 8 divisors (see below), whose sum is σ = 181213200. Its totient is φ = 90202112.

The previous prime is 135606529. The next prime is 135606547.

135606531 is nontrivially palindromic in base 10.

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 135606531 - 2¹ = 135606529 is a prime.

It is a super-2 number, since 2×135606531² = 36778262499707922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (135626531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48990 + ... + 51683.

It is an arithmetic number, because the mean of its divisors is an integer number (22651650).

Almost surely, 2^135606531 is an apocalyptic number.

135606531 is a deficient number, since it is larger than the sum of its proper divisors (45606669).

135606531 is a wasteful number, since it uses less digits than its factorization.

135606531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101125.

The product of its (nonzero) digits is 8100, while the sum is 30.

The square root of 135606531 is about 11645.0217260424. The cubic root of 135606531 is about 513.7598981050.

The spelling of 135606531 in words is "one hundred thirty-five million, six hundred six thousand, five hundred thirty-one".