134810681 has 4 divisors (see below), whose sum is σ = 141906000. Its totient is φ = 127715364.

The previous prime is 134810677. The next prime is 134810699. The reversal of 134810681 is 186018431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 186018431 = 1789 ⋅103979.

It is a cyclic number.

It is not a de Polignac number, because 134810681 - 2² = 134810677 is a prime.

It is a super-2 number, since 2×134810681² = 36347839423367522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134810651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3547631 + ... + 3547668.

It is an arithmetic number, because the mean of its divisors is an integer number (35476500).

Almost surely, 2^134810681 is an apocalyptic number.

It is an amenable number.

134810681 is a deficient number, since it is larger than the sum of its proper divisors (7095319).

134810681 is an equidigital number, since it uses as much as digits as its factorization.

134810681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7095318.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 134810681 is about 11610.8001877562. The cubic root of 134810681 is about 512.7528711262.

The spelling of 134810681 in words is "one hundred thirty-four million, eight hundred ten thousand, six hundred eighty-one".