2020231231217 has 2 divisors, whose sum is σ = 2020231231218. Its totient is φ = 2020231231216.

The previous prime is 2020231231133. The next prime is 2020231231223. The reversal of 2020231231217 is 7121321320202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1538589679201 + 481641552016 = 1240399^2 + 694004^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020231231217 - 2¹² = 2020231227121 is a prime.

It is not a weakly prime, because it can be changed into another prime (2020231231237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010115615608 + 1010115615609.

It is an arithmetic number, because the mean of its divisors is an integer number (1010115615609).

Almost surely, 2^{2020231231217} is an apocalyptic number.

It is an amenable number.

2020231231217 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020231231217 is an equidigital number, since it uses as much as digits as its factorization.

2020231231217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 2020231231217 its reverse (7121321320202), we get a palindrome (9141552551419).

The spelling of 2020231231217 in words is "two trillion, twenty billion, two hundred thirty-one million, two hundred thirty-one thousand, two hundred seventeen".