135205004031523 has 8 divisors (see below), whose sum is σ = 135289739855088. Its totient is φ = 135120270827424.

The previous prime is 135205004031499. The next prime is 135205004031527. The reversal of 135205004031523 is 325130400502531.

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 135205004031523 - 2⁹ = 135205004031011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135205004031527) 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, 108277365 + ... + 109518937.

It is an arithmetic number, because the mean of its divisors is an integer number (16911217481886).

Almost surely, 2^{135205004031523} is an apocalyptic number.

135205004031523 is a deficient number, since it is larger than the sum of its proper divisors (84735823565).

135205004031523 is a wasteful number, since it uses less digits than its factorization.

135205004031523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1309733.

The product of its (nonzero) digits is 54000, while the sum is 34.

The spelling of 135205004031523 in words is "one hundred thirty-five trillion, two hundred five billion, four million, thirty-one thousand, five hundred twenty-three".