655110313321 has 2 divisors, whose sum is σ = 655110313322. Its totient is φ = 655110313320.

The previous prime is 655110313309. The next prime is 655110313331. The reversal of 655110313321 is 123313011556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 531529941721 + 123580371600 = 729061^2 + 351540^2 .

It is a cyclic number.

It is not a de Polignac number, because 655110313321 - 2⁹ = 655110312809 is a prime.

It is a super-3 number, since 3×655110313321³ (a number of 36 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (655110313331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 327555156660 + 327555156661.

It is an arithmetic number, because the mean of its divisors is an integer number (327555156661).

Almost surely, 2^655110313321 is an apocalyptic number.

It is an amenable number.

655110313321 is a deficient number, since it is larger than the sum of its proper divisors (1).

655110313321 is an equidigital number, since it uses as much as digits as its factorization.

655110313321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 655110313321 its reverse (123313011556), we get a palindrome (778423324877).

The spelling of 655110313321 in words is "six hundred fifty-five billion, one hundred ten million, three hundred thirteen thousand, three hundred twenty-one".