135243363342531 has 16 divisors (see below), whose sum is σ = 181470499099904. Its totient is φ = 89589477160224.

The previous prime is 135243363342523. The next prime is 135243363342533.

135243363342531 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 135243363342531 - 2³ = 135243363342523 is a prime.

It is a super-2 number, since 2×135243363342531² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135243363342533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28046056 + ... + 32512581.

It is an arithmetic number, because the mean of its divisors is an integer number (11341906193744).

Almost surely, 2^{135243363342531} is an apocalyptic number.

135243363342531 is a deficient number, since it is larger than the sum of its proper divisors (46227135757373).

135243363342531 is a wasteful number, since it uses less digits than its factorization.

135243363342531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60563370.

The product of its digits is 6998400, while the sum is 48.

The spelling of 135243363342531 in words is "one hundred thirty-five trillion, two hundred forty-three billion, three hundred sixty-three million, three hundred forty-two thousand, five hundred thirty-one".