135505150231 has 4 divisors (see below), whose sum is σ = 147823800264. Its totient is φ = 123186500200.

The previous prime is 135505150229. The next prime is 135505150267. The reversal of 135505150231 is 132051505531.

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

It is a cyclic number.

It is not a de Polignac number, because 135505150231 - 2¹ = 135505150229 is a prime.

It is a super-2 number, since 2×135505150231² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135505150193 and 135505150202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135505150201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6159325000 + ... + 6159325021.

It is an arithmetic number, because the mean of its divisors is an integer number (36955950066).

Almost surely, 2^135505150231 is an apocalyptic number.

135505150231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

135505150231 is a deficient number, since it is larger than the sum of its proper divisors (12318650033).

135505150231 is a wasteful number, since it uses less digits than its factorization.

135505150231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12318650032.

The product of its (nonzero) digits is 11250, while the sum is 31.

Adding to 135505150231 its reverse (132051505531), we get a palindrome (267556655762).

The spelling of 135505150231 in words is "one hundred thirty-five billion, five hundred five million, one hundred fifty thousand, two hundred thirty-one".