613223111 has 2 divisors, whose sum is σ = 613223112. Its totient is φ = 613223110.

The previous prime is 613223087. The next prime is 613223123. The reversal of 613223111 is 111322316.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 613223111 - 2¹⁰ = 613222087 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (613228111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306611555 + 306611556.

It is an arithmetic number, because the mean of its divisors is an integer number (306611556).

Almost surely, 2^613223111 is an apocalyptic number.

613223111 is a deficient number, since it is larger than the sum of its proper divisors (1).

613223111 is an equidigital number, since it uses as much as digits as its factorization.

613223111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 216, while the sum is 20.

The square root of 613223111 is about 24763.3420805835. The cubic root of 613223111 is about 849.5836997195.

Adding to 613223111 its reverse (111322316), we get a palindrome (724545427).

The spelling of 613223111 in words is "six hundred thirteen million, two hundred twenty-three thousand, one hundred eleven".