1305433013 has 2 divisors, whose sum is σ = 1305433014. Its totient is φ = 1305433012.

The previous prime is 1305432991. The next prime is 1305433027. The reversal of 1305433013 is 3103345031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 891798769 + 413634244 = 29863^2 + 20338^2 .

It is a cyclic number.

It is not a de Polignac number, because 1305433013 - 2⁶ = 1305432949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1305433013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1305430013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 652716506 + 652716507.

It is an arithmetic number, because the mean of its divisors is an integer number (652716507).

Almost surely, 2^1305433013 is an apocalyptic number.

It is an amenable number.

1305433013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1305433013 is an equidigital number, since it uses as much as digits as its factorization.

1305433013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 1305433013 is about 36130.7765346941. The cubic root of 1305433013 is about 1092.9111678062.

Adding to 1305433013 its reverse (3103345031), we get a palindrome (4408778044).

The spelling of 1305433013 in words is "one billion, three hundred five million, four hundred thirty-three thousand, thirteen".