135184081 has 4 divisors (see below), whose sum is σ = 135208432. Its totient is φ = 135159732.

The previous prime is 135184057. The next prime is 135184111. The reversal of 135184081 is 180481531.

135184081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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: 180481531 = 59 ⋅3059009.

It is a cyclic number.

It is not a de Polignac number, because 135184081 - 2²⁷ = 966353 is a prime.

It is a super-2 number, since 2×135184081² = 36549471511629122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135184381) 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, 670 + ... + 16456.

It is an arithmetic number, because the mean of its divisors is an integer number (33802108).

Almost surely, 2^135184081 is an apocalyptic number.

It is an amenable number.

135184081 is a deficient number, since it is larger than the sum of its proper divisors (24351).

135184081 is an equidigital number, since it uses as much as digits as its factorization.

135184081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24350.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 135184081 is about 11626.8689250374. The cubic root of 135184081 is about 513.2258440912.

The spelling of 135184081 in words is "one hundred thirty-five million, one hundred eighty-four thousand, eighty-one".