1303020217 has 2 divisors, whose sum is σ = 1303020218. Its totient is φ = 1303020216.

The previous prime is 1303020203. The next prime is 1303020239. The reversal of 1303020217 is 7120203031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1071645696 + 231374521 = 32736^2 + 15211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1303020217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1303020194 and 1303020203.

It is not a weakly prime, because it can be changed into another prime (1303020617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651510108 + 651510109.

It is an arithmetic number, because the mean of its divisors is an integer number (651510109).

Almost surely, 2^1303020217 is an apocalyptic number.

It is an amenable number.

1303020217 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303020217 is an equidigital number, since it uses as much as digits as its factorization.

1303020217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 1303020217 is about 36097.3713308878. The cubic root of 1303020217 is about 1092.2374199764.

Adding to 1303020217 its reverse (7120203031), we get a palindrome (8423223248).

The spelling of 1303020217 in words is "one billion, three hundred three million, twenty thousand, two hundred seventeen".