611316813 has 16 divisors (see below), whose sum is σ = 820624896. Its totient is φ = 404785920.

The previous prime is 611316809. The next prime is 611316817. The reversal of 611316813 is 318613116.

It is an interprime number because it is at equal distance from previous prime (611316809) and next prime (611316817).

It is not a de Polignac number, because 611316813 - 2² = 611316809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611316817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 412033 + ... + 413513.

It is an arithmetic number, because the mean of its divisors is an integer number (51289056).

Almost surely, 2^611316813 is an apocalyptic number.

It is an amenable number.

611316813 is a deficient number, since it is larger than the sum of its proper divisors (209308083).

611316813 is a wasteful number, since it uses less digits than its factorization.

611316813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324.

The product of its digits is 2592, while the sum is 30.

The square root of 611316813 is about 24724.8217991556. The cubic root of 611316813 is about 848.7024322007.

Adding to 611316813 its reverse (318613116), we get a palindrome (929929929).

The spelling of 611316813 in words is "six hundred eleven million, three hundred sixteen thousand, eight hundred thirteen".