245310421021313 has 2 divisors, whose sum is σ = 245310421021314. Its totient is φ = 245310421021312.

The previous prime is 245310421021277. The next prime is 245310421021319. The reversal of 245310421021313 is 313120124013542.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 245306137711504 + 4283309809 = 15662252^2 + 65447^2 .

It is a cyclic number.

It is not a de Polignac number, because 245310421021313 - 2¹⁸ = 245310420759169 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 245310421021313.

It is not a weakly prime, because it can be changed into another prime (245310421021319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122655210510656 + 122655210510657.

It is an arithmetic number, because the mean of its divisors is an integer number (122655210510657).

Almost surely, 2^{245310421021313} is an apocalyptic number.

It is an amenable number.

245310421021313 is a deficient number, since it is larger than the sum of its proper divisors (1).

245310421021313 is an equidigital number, since it uses as much as digits as its factorization.

245310421021313 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 245310421021313 its reverse (313120124013542), we get a palindrome (558430545034855).

The spelling of 245310421021313 in words is "two hundred forty-five trillion, three hundred ten billion, four hundred twenty-one million, twenty-one thousand, three hundred thirteen".