135420433415231 has 8 divisors (see below), whose sum is σ = 143703333912960. Its totient is φ = 127337120881432.

The previous prime is 135420433415219. The next prime is 135420433415233. The reversal of 135420433415231 is 132514334024531.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135420433415231 is a prime.

It is a super-3 number, since 3×135420433415231³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135420433415233) 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, 49896989585 + ... + 49896992298.

It is an arithmetic number, because the mean of its divisors is an integer number (17962916739120).

Almost surely, 2^{135420433415231} is an apocalyptic number.

135420433415231 is a deficient number, since it is larger than the sum of its proper divisors (8282900497729).

135420433415231 is an equidigital number, since it uses as much as digits as its factorization.

135420433415231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99793981965.

The product of its (nonzero) digits is 518400, while the sum is 41.

Adding to 135420433415231 its reverse (132514334024531), we get a palindrome (267934767439762).

The spelling of 135420433415231 in words is "one hundred thirty-five trillion, four hundred twenty billion, four hundred thirty-three million, four hundred fifteen thousand, two hundred thirty-one".