1313303449 has 2 divisors, whose sum is σ = 1313303450. Its totient is φ = 1313303448.

The previous prime is 1313303447. The next prime is 1313303477. The reversal of 1313303449 is 9443033131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791409424 + 521894025 = 28132^2 + 22845^2 .

It is a cyclic number.

It is not a de Polignac number, because 1313303449 - 2¹ = 1313303447 is a prime.

Together with 1313303447, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1313303449.

It is not a weakly prime, because it can be changed into another prime (1313303441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656651724 + 656651725.

It is an arithmetic number, because the mean of its divisors is an integer number (656651725).

Almost surely, 2^1313303449 is an apocalyptic number.

It is an amenable number.

1313303449 is a deficient number, since it is larger than the sum of its proper divisors (1).

1313303449 is an equidigital number, since it uses as much as digits as its factorization.

1313303449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11664, while the sum is 31.

The square root of 1313303449 is about 36239.5288186809. The cubic root of 1313303449 is about 1095.1031502114.

The spelling of 1313303449 in words is "one billion, three hundred thirteen million, three hundred three thousand, four hundred forty-nine".