135181715 has 8 divisors (see below), whose sum is σ = 166174848. Its totient is φ = 105507520.

The previous prime is 135181687. The next prime is 135181727. The reversal of 135181715 is 517181531.

It is a happy number.

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

It is not a de Polignac number, because 135181715 - 2²² = 130987411 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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, 329507 + ... + 329916.

It is an arithmetic number, because the mean of its divisors is an integer number (20771856).

Almost surely, 2^135181715 is an apocalyptic number.

135181715 is a deficient number, since it is larger than the sum of its proper divisors (30993133).

135181715 is an equidigital number, since it uses as much as digits as its factorization.

135181715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659469.

The product of its digits is 4200, while the sum is 32.

The square root of 135181715 is about 11626.7671775090. The cubic root of 135181715 is about 513.2228499038. Note that the first 3 decimals are identical.

The spelling of 135181715 in words is "one hundred thirty-five million, one hundred eighty-one thousand, seven hundred fifteen".