213036613 has 2 divisors, whose sum is σ = 213036614. Its totient is φ = 213036612.

The previous prime is 213036611. The next prime is 213036631. The reversal of 213036613 is 316630312.

213036613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (213036631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 138697729 + 74338884 = 11777^2 + 8622^2 .

It is a cyclic number.

It is not a de Polignac number, because 213036613 - 2¹ = 213036611 is a prime.

Together with 213036611, 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 (213036611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106518306 + 106518307.

It is an arithmetic number, because the mean of its divisors is an integer number (106518307).

Almost surely, 2^213036613 is an apocalyptic number.

It is an amenable number.

213036613 is a deficient number, since it is larger than the sum of its proper divisors (1).

213036613 is an equidigital number, since it uses as much as digits as its factorization.

213036613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 213036613 is about 14595.7738061399. The cubic root of 213036613 is about 597.2434785241.

Adding to 213036613 its reverse (316630312), we get a palindrome (529666925).

The spelling of 213036613 in words is "two hundred thirteen million, thirty-six thousand, six hundred thirteen".