1303012313321 has 4 divisors (see below), whose sum is σ = 1303016211012. Its totient is φ = 1303008415632.

The previous prime is 1303012313257. The next prime is 1303012313387. The reversal of 1303012313321 is 1233132103031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 638728632025 + 664283681296 = 799205^2 + 815036^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303012313321 - 2⁶ = 1303012313257 is a prime.

It is a super-2 number, since 2×1303012313321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303012313621) 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 in 3 ways as a sum of consecutive naturals, for example, 1394906 + ... + 2133491.

It is an arithmetic number, because the mean of its divisors is an integer number (325754052753).

Almost surely, 2^{1303012313321} is an apocalyptic number.

It is an amenable number.

1303012313321 is a deficient number, since it is larger than the sum of its proper divisors (3897691).

1303012313321 is an equidigital number, since it uses as much as digits as its factorization.

1303012313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3897690.

The product of its (nonzero) digits is 972, while the sum is 23.

Adding to 1303012313321 its reverse (1233132103031), we get a palindrome (2536144416352).

The spelling of 1303012313321 in words is "one trillion, three hundred three billion, twelve million, three hundred thirteen thousand, three hundred twenty-one".