200431131203221 has 2 divisors, whose sum is σ = 200431131203222. Its totient is φ = 200431131203220.

The previous prime is 200431131203201. The next prime is 200431131203263. The reversal of 200431131203221 is 122302131134002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 123211221003025 + 77219910200196 = 11100055^2 + 8787486^2 .

It is a cyclic number.

It is not a de Polignac number, because 200431131203221 - 2¹⁷ = 200431131072149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200431131203201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100215565601610 + 100215565601611.

It is an arithmetic number, because the mean of its divisors is an integer number (100215565601611).

Almost surely, 2^{200431131203221} is an apocalyptic number.

It is an amenable number.

200431131203221 is a deficient number, since it is larger than the sum of its proper divisors (1).

200431131203221 is an equidigital number, since it uses as much as digits as its factorization.

200431131203221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 200431131203221 its reverse (122302131134002), we get a palindrome (322733262337223).

The spelling of 200431131203221 in words is "two hundred trillion, four hundred thirty-one billion, one hundred thirty-one million, two hundred three thousand, two hundred twenty-one".