1321132313 has 2 divisors, whose sum is σ = 1321132314. Its totient is φ = 1321132312.

The previous prime is 1321132289. The next prime is 1321132321. The reversal of 1321132313 is 3132311231.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 813846784 + 507285529 = 28528^2 + 22523^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321132313 - 2¹⁶ = 1321066777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321132333) 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, 660566156 + 660566157.

It is an arithmetic number, because the mean of its divisors is an integer number (660566157).

Almost surely, 2^1321132313 is an apocalyptic number.

It is an amenable number.

1321132313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321132313 is an equidigital number, since it uses as much as digits as its factorization.

1321132313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 324, while the sum is 20.

The square root of 1321132313 is about 36347.3838535870. The cubic root of 1321132313 is about 1097.2748833545.

Adding to 1321132313 its reverse (3132311231), we get a palindrome (4453443544).

The spelling of 1321132313 in words is "one billion, three hundred twenty-one million, one hundred thirty-two thousand, three hundred thirteen".