135311171 has 4 divisors (see below), whose sum is σ = 135752232. Its totient is φ = 134870112.

The previous prime is 135311159. The next prime is 135311191. The reversal of 135311171 is 171113531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 171113531 = 1091 ⋅156841.

It is a cyclic number.

It is not a de Polignac number, because 135311171 - 2⁶ = 135311107 is a prime.

It is a super-2 number, since 2×135311171² = 36618225994782482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135311101) 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, 220070 + ... + 220683.

It is an arithmetic number, because the mean of its divisors is an integer number (33938058).

Almost surely, 2^135311171 is an apocalyptic number.

135311171 is a deficient number, since it is larger than the sum of its proper divisors (441061).

135311171 is an equidigital number, since it uses as much as digits as its factorization.

135311171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441060.

The product of its digits is 315, while the sum is 23.

The square root of 135311171 is about 11632.3329990161. The cubic root of 135311171 is about 513.3866259489.

The spelling of 135311171 in words is "one hundred thirty-five million, three hundred eleven thousand, one hundred seventy-one".