1312661353 has 2 divisors, whose sum is σ = 1312661354. Its totient is φ = 1312661352.

The previous prime is 1312661333. The next prime is 1312661381. The reversal of 1312661353 is 3531662131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 902882304 + 409779049 = 30048^2 + 20243^2 .

It is a cyclic number.

It is not a de Polignac number, because 1312661353 - 2²⁹ = 775790441 is a prime.

It is not a weakly prime, because it can be changed into another prime (1312661333) 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, 656330676 + 656330677.

It is an arithmetic number, because the mean of its divisors is an integer number (656330677).

Almost surely, 2^1312661353 is an apocalyptic number.

It is an amenable number.

1312661353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1312661353 is an equidigital number, since it uses as much as digits as its factorization.

1312661353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9720, while the sum is 31.

The square root of 1312661353 is about 36230.6686800009. The cubic root of 1312661353 is about 1094.9246497082.

The spelling of 1312661353 in words is "one billion, three hundred twelve million, six hundred sixty-one thousand, three hundred fifty-three".