321134135321 has 4 divisors (see below), whose sum is σ = 321264733200. Its totient is φ = 321003537444.

The previous prime is 321134135293. The next prime is 321134135323. The reversal of 321134135321 is 123531431123.

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-321134135321 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (321134135323) 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, 65295251 + ... + 65300168.

It is an arithmetic number, because the mean of its divisors is an integer number (80316183300).

Almost surely, 2^321134135321 is an apocalyptic number.

It is an amenable number.

321134135321 is a deficient number, since it is larger than the sum of its proper divisors (130597879).

321134135321 is a wasteful number, since it uses less digits than its factorization.

321134135321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130597878.

The product of its digits is 6480, while the sum is 29.

Adding to 321134135321 its reverse (123531431123), we get a palindrome (444665566444).

The spelling of 321134135321 in words is "three hundred twenty-one billion, one hundred thirty-four million, one hundred thirty-five thousand, three hundred twenty-one".