134540813 has 4 divisors (see below), whose sum is σ = 146771808. Its totient is φ = 122309820.

The previous prime is 134540797. The next prime is 134540867. The reversal of 134540813 is 318045431.

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: 318045431 = 11 ⋅28913221.

It is a cyclic number.

It is not a de Polignac number, because 134540813 - 2⁴ = 134540797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134540893) 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, 6115481 + ... + 6115502.

It is an arithmetic number, because the mean of its divisors is an integer number (36692952).

Almost surely, 2^134540813 is an apocalyptic number.

It is an amenable number.

134540813 is a deficient number, since it is larger than the sum of its proper divisors (12230995).

134540813 is a wasteful number, since it uses less digits than its factorization.

134540813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12230994.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 134540813 is about 11599.1729446543. The cubic root of 134540813 is about 512.4104946211.

The spelling of 134540813 in words is "one hundred thirty-four million, five hundred forty thousand, eight hundred thirteen".