1303353215491 has 2 divisors, whose sum is σ = 1303353215492. Its totient is φ = 1303353215490.

The previous prime is 1303353215477. The next prime is 1303353215609. The reversal of 1303353215491 is 1945123533031.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1303353215491 - 2¹⁷ = 1303353084419 is a prime.

It is not a weakly prime, because it can be changed into another prime (1303353215431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 651676607745 + 651676607746.

It is an arithmetic number, because the mean of its divisors is an integer number (651676607746).

Almost surely, 2^{1303353215491} is an apocalyptic number.

1303353215491 is a deficient number, since it is larger than the sum of its proper divisors (1).

1303353215491 is an equidigital number, since it uses as much as digits as its factorization.

1303353215491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145800, while the sum is 40.

The spelling of 1303353215491 in words is "one trillion, three hundred three billion, three hundred fifty-three million, two hundred fifteen thousand, four hundred ninety-one".