213130300321 has 4 divisors (see below), whose sum is σ = 213604978500. Its totient is φ = 212655622144.

The previous prime is 213130300297. The next prime is 213130300333. The reversal of 213130300321 is 123003031312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 56758297600 + 156372002721 = 238240^2 + 395439^2 .

It is a cyclic number.

It is not a de Polignac number, because 213130300321 - 2²⁵ = 213096745889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213130330321) 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, 237338416 + ... + 237339313.

It is an arithmetic number, because the mean of its divisors is an integer number (53401244625).

Almost surely, 2^213130300321 is an apocalyptic number.

It is an amenable number.

213130300321 is a deficient number, since it is larger than the sum of its proper divisors (474678179).

213130300321 is an equidigital number, since it uses as much as digits as its factorization.

213130300321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474678178.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 213130300321 its reverse (123003031312), we get a palindrome (336133331633).

The spelling of 213130300321 in words is "two hundred thirteen billion, one hundred thirty million, three hundred thousand, three hundred twenty-one".