135655131 has 4 divisors (see below), whose sum is σ = 180873512. Its totient is φ = 90436752.

The previous prime is 135655129. The next prime is 135655147. The reversal of 135655131 is 131556531.

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

It is not a de Polignac number, because 135655131 - 2¹ = 135655129 is a prime.

It is a super-2 number, since 2×135655131² = 36804629133254322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135655151) 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, 22609186 + ... + 22609191.

It is an arithmetic number, because the mean of its divisors is an integer number (45218378).

Almost surely, 2^135655131 is an apocalyptic number.

135655131 is a deficient number, since it is larger than the sum of its proper divisors (45218381).

135655131 is an equidigital number, since it uses as much as digits as its factorization.

135655131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45218380.

The product of its digits is 6750, while the sum is 30.

The square root of 135655131 is about 11647.1082677204. The cubic root of 135655131 is about 513.8212662131.

The spelling of 135655131 in words is "one hundred thirty-five million, six hundred fifty-five thousand, one hundred thirty-one".