321125423340613 has 2 divisors, whose sum is σ = 321125423340614. Its totient is φ = 321125423340612.

The previous prime is 321125423340487. The next prime is 321125423340637. The reversal of 321125423340613 is 316043324521123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 266907796059969 + 54217627280644 = 16337313^2 + 7363262^2 .

It is a cyclic number.

It is not a de Polignac number, because 321125423340613 - 2⁹ = 321125423340101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (321125423349613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160562711670306 + 160562711670307.

It is an arithmetic number, because the mean of its divisors is an integer number (160562711670307).

Almost surely, 2^{321125423340613} is an apocalyptic number.

It is an amenable number.

321125423340613 is a deficient number, since it is larger than the sum of its proper divisors (1).

321125423340613 is an equidigital number, since it uses as much as digits as its factorization.

321125423340613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 40.

Adding to 321125423340613 its reverse (316043324521123), we get a palindrome (637168747861736).

The spelling of 321125423340613 in words is "three hundred twenty-one trillion, one hundred twenty-five billion, four hundred twenty-three million, three hundred forty thousand, six hundred thirteen".