611009213 has 2 divisors, whose sum is σ = 611009214. Its totient is φ = 611009212.

The previous prime is 611009159. The next prime is 611009219. The reversal of 611009213 is 312900116.

It is a happy number.

611009213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 391169284 + 219839929 = 19778^2 + 14827^2 .

It is a cyclic number.

It is not a de Polignac number, because 611009213 - 2¹² = 611005117 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611009219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305504606 + 305504607.

It is an arithmetic number, because the mean of its divisors is an integer number (305504607).

Almost surely, 2^611009213 is an apocalyptic number.

It is an amenable number.

611009213 is a deficient number, since it is larger than the sum of its proper divisors (1).

611009213 is an equidigital number, since it uses as much as digits as its factorization.

611009213 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 23.

The square root of 611009213 is about 24718.6005469565. The cubic root of 611009213 is about 848.5600593965.

Adding to 611009213 its reverse (312900116), we get a palindrome (923909329).

The spelling of 611009213 in words is "six hundred eleven million, nine thousand, two hundred thirteen".