213130130321 has 2 divisors, whose sum is σ = 213130130322. Its totient is φ = 213130130320.

The previous prime is 213130130243. The next prime is 213130130351. The reversal of 213130130321 is 123031031312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179298046096 + 33832084225 = 423436^2 + 183935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213130130321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213130130293 and 213130130302.

It is not a weakly prime, because it can be changed into another prime (213130130351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106565065160 + 106565065161.

It is an arithmetic number, because the mean of its divisors is an integer number (106565065161).

Almost surely, 2^213130130321 is an apocalyptic number.

It is an amenable number.

213130130321 is a deficient number, since it is larger than the sum of its proper divisors (1).

213130130321 is an equidigital number, since it uses as much as digits as its factorization.

213130130321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 213130130321 its reverse (123031031312), we get a palindrome (336161161633).

Subtracting from 213130130321 its reverse (123031031312), we obtain a palindrome (90099099009).

The spelling of 213130130321 in words is "two hundred thirteen billion, one hundred thirty million, one hundred thirty thousand, three hundred twenty-one".