136317531 has 16 divisors (see below), whose sum is σ = 212143104. Its totient is φ = 76237824.

The previous prime is 136317523. The next prime is 136317547. The reversal of 136317531 is 135713631.

It is not a de Polignac number, because 136317531 - 2³ = 136317523 is a prime.

It is a super-2 number, since 2×136317531² = 37164938515871922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136317031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68070 + ... + 70043.

It is an arithmetic number, because the mean of its divisors is an integer number (13258944).

Almost surely, 2^136317531 is an apocalyptic number.

136317531 is a deficient number, since it is larger than the sum of its proper divisors (75825573).

136317531 is a wasteful number, since it uses less digits than its factorization.

136317531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138170.

The product of its digits is 5670, while the sum is 30.

The square root of 136317531 is about 11675.5098817996. The cubic root of 136317531 is about 514.6562333358.

The spelling of 136317531 in words is "one hundred thirty-six million, three hundred seventeen thousand, five hundred thirty-one".