135534305231 has 4 divisors (see below), whose sum is σ = 145960021032. Its totient is φ = 125108589432.

The previous prime is 135534305219. The next prime is 135534305239. The reversal of 135534305231 is 132503435531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 132503435531 = 1129 ⋅117363539.

It is a cyclic number.

It is not a de Polignac number, because 135534305231 - 2¹⁴ = 135534288847 is a prime.

It is a super-2 number, since 2×135534305231² (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 = 135534305191 and 135534305200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135534305239) 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, 5212857881 + ... + 5212857906.

It is an arithmetic number, because the mean of its divisors is an integer number (36490005258).

Almost surely, 2^135534305231 is an apocalyptic number.

135534305231 is a deficient number, since it is larger than the sum of its proper divisors (10425715801).

135534305231 is a wasteful number, since it uses less digits than its factorization.

135534305231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10425715800.

The product of its (nonzero) digits is 81000, while the sum is 35.

The spelling of 135534305231 in words is "one hundred thirty-five billion, five hundred thirty-four million, three hundred five thousand, two hundred thirty-one".