1321351650313 has 2 divisors, whose sum is σ = 1321351650314. Its totient is φ = 1321351650312.

The previous prime is 1321351650301. The next prime is 1321351650323. The reversal of 1321351650313 is 3130561531231.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1219231139344 + 102120510969 = 1104188^2 + 319563^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321351650313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1321351650323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 660675825156 + 660675825157.

It is an arithmetic number, because the mean of its divisors is an integer number (660675825157).

Almost surely, 2^{1321351650313} is an apocalyptic number.

It is an amenable number.

1321351650313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321351650313 is an equidigital number, since it uses as much as digits as its factorization.

1321351650313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24300, while the sum is 34.

The spelling of 1321351650313 in words is "one trillion, three hundred twenty-one billion, three hundred fifty-one million, six hundred fifty thousand, three hundred thirteen".