1312003231313 has 2 divisors, whose sum is σ = 1312003231314. Its totient is φ = 1312003231312.

The previous prime is 1312003231241. The next prime is 1312003231351. The reversal of 1312003231313 is 3131323002131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1139306468689 + 172696762624 = 1067383^2 + 415568^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312003231313 - 2⁸ = 1312003231057 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312003230313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 656001615656 + 656001615657.

It is an arithmetic number, because the mean of its divisors is an integer number (656001615657).

Almost surely, 2^{1312003231313} is an apocalyptic number.

It is an amenable number.

1312003231313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312003231313 is an equidigital number, since it uses as much as digits as its factorization.

1312003231313 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1312003231313 its reverse (3131323002131), we get a palindrome (4443326233444).

The spelling of 1312003231313 in words is "one trillion, three hundred twelve billion, three million, two hundred thirty-one thousand, three hundred thirteen".