203422131231217 has 2 divisors, whose sum is σ = 203422131231218. Its totient is φ = 203422131231216.

The previous prime is 203422131231131. The next prime is 203422131231287. The reversal of 203422131231217 is 712132131224302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 156704304749281 + 46717826481936 = 12518159^2 + 6835044^2 .

It is a cyclic number.

It is not a de Polignac number, because 203422131231217 - 2¹⁵ = 203422131198449 is a prime.

It is not a weakly prime, because it can be changed into another prime (203422131231287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101711065615608 + 101711065615609.

It is an arithmetic number, because the mean of its divisors is an integer number (101711065615609).

Almost surely, 2^{203422131231217} is an apocalyptic number.

It is an amenable number.

203422131231217 is a deficient number, since it is larger than the sum of its proper divisors (1).

203422131231217 is an equidigital number, since it uses as much as digits as its factorization.

203422131231217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

Adding to 203422131231217 its reverse (712132131224302), we get a palindrome (915554262455519).

The spelling of 203422131231217 in words is "two hundred three trillion, four hundred twenty-two billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred seventeen".