213102302321 has 4 divisors (see below), whose sum is σ = 217123100532. Its totient is φ = 209081504112.

The previous prime is 213102302317. The next prime is 213102302323. The reversal of 213102302321 is 123203201312.

213102302321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 126878440000 + 86223862321 = 356200^2 + 293639^2 .

It is a cyclic number.

It is not a de Polignac number, because 213102302321 - 2² = 213102302317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213102302293 and 213102302302.

It is not an unprimeable number, because it can be changed into a prime (213102302323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2010399026 + ... + 2010399131.

It is an arithmetic number, because the mean of its divisors is an integer number (54280775133).

Almost surely, 2^213102302321 is an apocalyptic number.

It is an amenable number.

213102302321 is a deficient number, since it is larger than the sum of its proper divisors (4020798211).

213102302321 is an equidigital number, since it uses as much as digits as its factorization.

213102302321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4020798210.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 213102302321 its reverse (123203201312), we get a palindrome (336305503633).

The spelling of 213102302321 in words is "two hundred thirteen billion, one hundred two million, three hundred two thousand, three hundred twenty-one".