135421032131311 has 4 divisors (see below), whose sum is σ = 135421063687000. Its totient is φ = 135421000575624.

The previous prime is 135421032131309. The next prime is 135421032131339. The reversal of 135421032131311 is 113131230124531.

It is a happy number.

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 135421032131311 - 2¹ = 135421032131309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135421032131351) 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, 8092896 + ... + 18339493.

It is an arithmetic number, because the mean of its divisors is an integer number (33855265921750).

Almost surely, 2^{135421032131311} is an apocalyptic number.

135421032131311 is a deficient number, since it is larger than the sum of its proper divisors (31555689).

135421032131311 is an equidigital number, since it uses as much as digits as its factorization.

135421032131311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31555688.

The product of its (nonzero) digits is 6480, while the sum is 31.

Adding to 135421032131311 its reverse (113131230124531), we get a palindrome (248552262255842).

The spelling of 135421032131311 in words is "one hundred thirty-five trillion, four hundred twenty-one billion, thirty-two million, one hundred thirty-one thousand, three hundred eleven".