321536130213 has 4 divisors (see below), whose sum is σ = 428714840288. Its totient is φ = 214357420140.

The previous prime is 321536130211. The next prime is 321536130217. The reversal of 321536130213 is 312031635123.

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 not a de Polignac number, because 321536130213 - 2¹ = 321536130211 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 (321536130211) 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, 53589355033 + ... + 53589355038.

It is an arithmetic number, because the mean of its divisors is an integer number (107178710072).

Almost surely, 2^321536130213 is an apocalyptic number.

It is an amenable number.

321536130213 is a deficient number, since it is larger than the sum of its proper divisors (107178710075).

321536130213 is a wasteful number, since it uses less digits than its factorization.

321536130213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107178710074.

The product of its (nonzero) digits is 9720, while the sum is 30.

Adding to 321536130213 its reverse (312031635123), we get a palindrome (633567765336).

The spelling of 321536130213 in words is "three hundred twenty-one billion, five hundred thirty-six million, one hundred thirty thousand, two hundred thirteen".