213214512613 has 2 divisors, whose sum is σ = 213214512614. Its totient is φ = 213214512612.

The previous prime is 213214512611. The next prime is 213214512701. The reversal of 213214512613 is 316215412312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146963356164 + 66251156449 = 383358^2 + 257393^2 .

It is a cyclic number.

It is not a de Polignac number, because 213214512613 - 2¹ = 213214512611 is a prime.

Together with 213214512611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213214512611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106607256306 + 106607256307.

It is an arithmetic number, because the mean of its divisors is an integer number (106607256307).

Almost surely, 2^213214512613 is an apocalyptic number.

It is an amenable number.

213214512613 is a deficient number, since it is larger than the sum of its proper divisors (1).

213214512613 is an equidigital number, since it uses as much as digits as its factorization.

213214512613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 31.

Adding to 213214512613 its reverse (316215412312), we get a palindrome (529429924925).

The spelling of 213214512613 in words is "two hundred thirteen billion, two hundred fourteen million, five hundred twelve thousand, six hundred thirteen".