40343313013 has 2 divisors, whose sum is σ = 40343313014. Its totient is φ = 40343313012.

The previous prime is 40343312987. The next prime is 40343313041. The reversal of 40343313013 is 31031334304.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28500867684 + 11842445329 = 168822^2 + 108823^2 .

It is a cyclic number.

It is not a de Polignac number, because 40343313013 - 2²⁵ = 40309758581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40343313613) 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, 20171656506 + 20171656507.

It is an arithmetic number, because the mean of its divisors is an integer number (20171656507).

Almost surely, 2^40343313013 is an apocalyptic number.

It is an amenable number.

40343313013 is a deficient number, since it is larger than the sum of its proper divisors (1).

40343313013 is an equidigital number, since it uses as much as digits as its factorization.

40343313013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 40343313013 its reverse (31031334304), we get a palindrome (71374647317).

The spelling of 40343313013 in words is "forty billion, three hundred forty-three million, three hundred thirteen thousand, thirteen".