134686531 has 4 divisors (see below), whose sum is σ = 153927472. Its totient is φ = 115445592.

The previous prime is 134686511. The next prime is 134686553. The reversal of 134686531 is 135686431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 134686531 - 2⁷ = 134686403 is a prime.

It is a super-2 number, since 2×134686531² = 36280923265627922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134686501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9620460 + ... + 9620473.

It is an arithmetic number, because the mean of its divisors is an integer number (38481868).

Almost surely, 2^134686531 is an apocalyptic number.

134686531 is a deficient number, since it is larger than the sum of its proper divisors (19240941).

134686531 is an equidigital number, since it uses as much as digits as its factorization.

134686531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19240940.

The product of its digits is 51840, while the sum is 37.

The square root of 134686531 is about 11605.4526408926. The cubic root of 134686531 is about 512.5954211381.

The spelling of 134686531 in words is "one hundred thirty-four million, six hundred eighty-six thousand, five hundred thirty-one".