135823171 has 8 divisors (see below), whose sum is σ = 148940784. Its totient is φ = 122833920.

The previous prime is 135823169. The next prime is 135823223. The reversal of 135823171 is 171328531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135823171 - 2¹ = 135823169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135823151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29866 + ... + 34111.

It is an arithmetic number, because the mean of its divisors is an integer number (18617598).

Almost surely, 2^135823171 is an apocalyptic number.

135823171 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135823171 is a deficient number, since it is larger than the sum of its proper divisors (13117613).

135823171 is a wasteful number, since it uses less digits than its factorization.

135823171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64181.

The product of its digits is 5040, while the sum is 31.

The square root of 135823171 is about 11654.3198428737. The cubic root of 135823171 is about 514.0333405072.

The spelling of 135823171 in words is "one hundred thirty-five million, eight hundred twenty-three thousand, one hundred seventy-one".