135881151 has 8 divisors (see below), whose sum is σ = 207057024. Its totient is φ = 77646360.

The previous prime is 135881147. The next prime is 135881177. The reversal of 135881151 is 151188531.

135881151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 135881151 - 2² = 135881147 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135881111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3235245 + ... + 3235286.

It is an arithmetic number, because the mean of its divisors is an integer number (25882128).

Almost surely, 2^135881151 is an apocalyptic number.

135881151 is a deficient number, since it is larger than the sum of its proper divisors (71175873).

135881151 is an equidigital number, since it uses as much as digits as its factorization.

135881151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6470541.

The product of its digits is 4800, while the sum is 33.

The square root of 135881151 is about 11656.8070671175. The cubic root of 135881151 is about 514.1064733730.

The spelling of 135881151 in words is "one hundred thirty-five million, eight hundred eighty-one thousand, one hundred fifty-one".