203130023421361 has 2 divisors, whose sum is σ = 203130023421362. Its totient is φ = 203130023421360.

The previous prime is 203130023421343. The next prime is 203130023421427. The reversal of 203130023421361 is 163124320031302.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149258900728336 + 53871122693025 = 12217156^2 + 7339695^2 .

It is a cyclic number.

It is not a de Polignac number, because 203130023421361 - 2¹⁷ = 203130023290289 is a prime.

It is not a weakly prime, because it can be changed into another prime (203130023421331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101565011710680 + 101565011710681.

It is an arithmetic number, because the mean of its divisors is an integer number (101565011710681).

Almost surely, 2^{203130023421361} is an apocalyptic number.

It is an amenable number.

203130023421361 is a deficient number, since it is larger than the sum of its proper divisors (1).

203130023421361 is an equidigital number, since it uses as much as digits as its factorization.

203130023421361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

Adding to 203130023421361 its reverse (163124320031302), we get a palindrome (366254343452663).

The spelling of 203130023421361 in words is "two hundred three trillion, one hundred thirty billion, twenty-three million, four hundred twenty-one thousand, three hundred sixty-one".