1303230211321 has 2 divisors, whose sum is σ = 1303230211322. Its totient is φ = 1303230211320.

The previous prime is 1303230211211. The next prime is 1303230211331. The reversal of 1303230211321 is 1231120323031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1227805828096 + 75424383225 = 1108064^2 + 274635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303230211321 - 2⁹ = 1303230210809 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1303230211292 and 1303230211301.

It is not a weakly prime, because it can be changed into another prime (1303230211331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651615105660 + 651615105661.

It is an arithmetic number, because the mean of its divisors is an integer number (651615105661).

Almost surely, 2^{1303230211321} is an apocalyptic number.

It is an amenable number.

1303230211321 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303230211321 is an equidigital number, since it uses as much as digits as its factorization.

1303230211321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1303230211321 its reverse (1231120323031), we get a palindrome (2534350534352).

The spelling of 1303230211321 in words is "one trillion, three hundred three billion, two hundred thirty million, two hundred eleven thousand, three hundred twenty-one".