20310244289 has 2 divisors, whose sum is σ = 20310244290. Its totient is φ = 20310244288.

The previous prime is 20310244259. The next prime is 20310244303. The reversal of 20310244289 is 98244201302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11991345025 + 8318899264 = 109505^2 + 91208^2 .

It is a cyclic number.

It is not a de Polignac number, because 20310244289 - 2¹⁶ = 20310178753 is a prime.

It is not a weakly prime, because it can be changed into another prime (20310244259) 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, 10155122144 + 10155122145.

It is an arithmetic number, because the mean of its divisors is an integer number (10155122145).

Almost surely, 2^20310244289 is an apocalyptic number.

It is an amenable number.

20310244289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20310244289 is an equidigital number, since it uses as much as digits as its factorization.

20310244289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 20310244289 in words is "twenty billion, three hundred ten million, two hundred forty-four thousand, two hundred eighty-nine".