135531142402133 has 4 divisors (see below), whose sum is σ = 135531166087680. Its totient is φ = 135531118716588.

The previous prime is 135531142402111. The next prime is 135531142402141. The reversal of 135531142402133 is 331204241135531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135531142402133 is a prime.

It is a super-2 number, since 2×135531142402133² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135531142002133) 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, 2662508 + ... + 16677866.

It is an arithmetic number, because the mean of its divisors is an integer number (33882791521920).

Almost surely, 2^{135531142402133} is an apocalyptic number.

It is an amenable number.

135531142402133 is a deficient number, since it is larger than the sum of its proper divisors (23685547).

135531142402133 is an equidigital number, since it uses as much as digits as its factorization.

135531142402133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23685546.

The product of its (nonzero) digits is 129600, while the sum is 38.

Adding to 135531142402133 its reverse (331204241135531), we get a palindrome (466735383537664).

The spelling of 135531142402133 in words is "one hundred thirty-five trillion, five hundred thirty-one billion, one hundred forty-two million, four hundred two thousand, one hundred thirty-three".