135115471 has 4 divisors (see below), whose sum is σ = 136508512. Its totient is φ = 133722432.

The previous prime is 135115469. The next prime is 135115493. The reversal of 135115471 is 174511531.

135115471 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 174511531 = 29 ⋅6017639.

It is a cyclic number.

It is not a de Polignac number, because 135115471 - 2¹ = 135115469 is a prime.

It is a super-3 number, since 3×135115471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135115411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696375 + ... + 696568.

It is an arithmetic number, because the mean of its divisors is an integer number (34127128).

Almost surely, 2^135115471 is an apocalyptic number.

135115471 is a deficient number, since it is larger than the sum of its proper divisors (1393041).

135115471 is an equidigital number, since it uses as much as digits as its factorization.

135115471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393040.

The product of its digits is 2100, while the sum is 28.

The square root of 135115471 is about 11623.9180571785. The cubic root of 135115471 is about 513.1390035310.

The spelling of 135115471 in words is "one hundred thirty-five million, one hundred fifteen thousand, four hundred seventy-one".