213201232613 has 2 divisors, whose sum is σ = 213201232614. Its totient is φ = 213201232612.

The previous prime is 213201232499. The next prime is 213201232619. The reversal of 213201232613 is 316232102312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207164253409 + 6036979204 = 455153^2 + 77698^2 .

It is a cyclic number.

It is not a de Polignac number, because 213201232613 - 2¹⁴ = 213201216229 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213201232619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106600616306 + 106600616307.

It is an arithmetic number, because the mean of its divisors is an integer number (106600616307).

Almost surely, 2^213201232613 is an apocalyptic number.

It is an amenable number.

213201232613 is a deficient number, since it is larger than the sum of its proper divisors (1).

213201232613 is an equidigital number, since it uses as much as digits as its factorization.

213201232613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 213201232613 its reverse (316232102312), we get a palindrome (529433334925).

The spelling of 213201232613 in words is "two hundred thirteen billion, two hundred one million, two hundred thirty-two thousand, six hundred thirteen".