135305041231 has 8 divisors (see below), whose sum is σ = 136636472960. Its totient is φ = 133973951832.

The previous prime is 135305041213. The next prime is 135305041243. The reversal of 135305041231 is 132140503531.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135305041231 - 2¹¹ = 135305039183 is a prime.

It is a super-2 number, since 2×135305041231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135305041231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135305021231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 748576 + ... + 911578.

It is an arithmetic number, because the mean of its divisors is an integer number (17079559120).

Almost surely, 2^135305041231 is an apocalyptic number.

135305041231 is a deficient number, since it is larger than the sum of its proper divisors (1331431729).

135305041231 is a wasteful number, since it uses less digits than its factorization.

135305041231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171165.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 135305041231 its reverse (132140503531), we get a palindrome (267445544762).

The spelling of 135305041231 in words is "one hundred thirty-five billion, three hundred five million, forty-one thousand, two hundred thirty-one".