611201213 has 4 divisors (see below), whose sum is σ = 698515680. Its totient is φ = 523886748.

The previous prime is 611201203. The next prime is 611201243. The reversal of 611201213 is 312102116.

611201213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 611201213 - 2²² = 607006909 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 611201191 and 611201200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611201203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43657223 + ... + 43657236.

It is an arithmetic number, because the mean of its divisors is an integer number (174628920).

Almost surely, 2^611201213 is an apocalyptic number.

It is an amenable number.

611201213 is a deficient number, since it is larger than the sum of its proper divisors (87314467).

611201213 is an equidigital number, since it uses as much as digits as its factorization.

611201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87314466.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 611201213 is about 24722.4839569166. The cubic root of 611201213 is about 848.6489322893.

Adding to 611201213 its reverse (312102116), we get a palindrome (923303329).

The spelling of 611201213 in words is "six hundred eleven million, two hundred one thousand, two hundred thirteen".