135047691 has 6 divisors (see below), whose sum is σ = 195068900. Its totient is φ = 90031788.

The previous prime is 135047681. The next prime is 135047699. The reversal of 135047691 is 196740531.

It is not a de Polignac number, because 135047691 - 2⁵ = 135047659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135047699) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7502641 + ... + 7502658.

Almost surely, 2^135047691 is an apocalyptic number.

135047691 is a deficient number, since it is larger than the sum of its proper divisors (60021209).

135047691 is a wasteful number, since it uses less digits than its factorization.

135047691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15005305 (or 15005302 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 135047691 is about 11621.0021512777. The cubic root of 135047691 is about 513.0531846413.

The spelling of 135047691 in words is "one hundred thirty-five million, forty-seven thousand, six hundred ninety-one".