1303220213 has 2 divisors, whose sum is σ = 1303220214. Its totient is φ = 1303220212.

The previous prime is 1303220173. The next prime is 1303220231. The reversal of 1303220213 is 3120223031.

Together with next prime (1303220231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 897721444 + 405498769 = 29962^2 + 20137^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1303220213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1303220191 and 1303220200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1303220293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651610106 + 651610107.

It is an arithmetic number, because the mean of its divisors is an integer number (651610107).

Almost surely, 2^1303220213 is an apocalyptic number.

It is an amenable number.

1303220213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303220213 is an equidigital number, since it uses as much as digits as its factorization.

1303220213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 1303220213 is about 36100.1414540165. The cubic root of 1303220213 is about 1092.2932983471.

Adding to 1303220213 its reverse (3120223031), we get a palindrome (4423443244).

The spelling of 1303220213 in words is "one billion, three hundred three million, two hundred twenty thousand, two hundred thirteen".