135505432504231 has 4 divisors (see below), whose sum is σ = 135505462896592. Its totient is φ = 135505402111872.

The previous prime is 135505432504223. The next prime is 135505432504241. The reversal of 135505432504231 is 132405234505531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135505432504231 - 2³ = 135505432504223 is a prime.

It is a super-2 number, since 2×135505432504231² (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 (135505432504241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7054266 + ... + 17910151.

It is an arithmetic number, because the mean of its divisors is an integer number (33876365724148).

Almost surely, 2^{135505432504231} is an apocalyptic number.

135505432504231 is a deficient number, since it is larger than the sum of its proper divisors (30392361).

135505432504231 is an equidigital number, since it uses as much as digits as its factorization.

135505432504231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30392360.

The product of its (nonzero) digits is 1080000, while the sum is 43.

The spelling of 135505432504231 in words is "one hundred thirty-five trillion, five hundred five billion, four hundred thirty-two million, five hundred four thousand, two hundred thirty-one".