135500550131 has 4 divisors (see below), whose sum is σ = 135726762000. Its totient is φ = 135274338264.

The previous prime is 135500550061. The next prime is 135500550181. The reversal of 135500550131 is 131055005531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 131055005531 = 47 ⋅2788404373.

It is a cyclic number.

It is not a de Polignac number, because 135500550131 - 2²⁶ = 135433441267 is a prime.

It is a super-2 number, since 2×135500550131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135500550094 and 135500550103.

It is not an unprimeable number, because it can be changed into a prime (135500550181) 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, 113105036 + ... + 113106233.

It is an arithmetic number, because the mean of its divisors is an integer number (33931690500).

Almost surely, 2^135500550131 is an apocalyptic number.

135500550131 is a deficient number, since it is larger than the sum of its proper divisors (226211869).

135500550131 is an equidigital number, since it uses as much as digits as its factorization.

135500550131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226211868.

The product of its (nonzero) digits is 5625, while the sum is 29.

Adding to 135500550131 its reverse (131055005531), we get a palindrome (266555555662).

The spelling of 135500550131 in words is "one hundred thirty-five billion, five hundred million, five hundred fifty thousand, one hundred thirty-one".