135017723 has 4 divisors (see below), whose sum is σ = 142959960. Its totient is φ = 127075488.

The previous prime is 135017683. The next prime is 135017737. The reversal of 135017723 is 327710531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135017723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135017123) 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 3 ways as a sum of consecutive naturals, for example, 3971093 + ... + 3971126.

It is an arithmetic number, because the mean of its divisors is an integer number (35739990).

Almost surely, 2^135017723 is an apocalyptic number.

135017723 is a deficient number, since it is larger than the sum of its proper divisors (7942237).

135017723 is an equidigital number, since it uses as much as digits as its factorization.

135017723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7942236.

The product of its (nonzero) digits is 4410, while the sum is 29.

The square root of 135017723 is about 11619.7126900797. The cubic root of 135017723 is about 513.0152318383.

The spelling of 135017723 in words is "one hundred thirty-five million, seventeen thousand, seven hundred twenty-three".