8378313343 has 2 divisors, whose sum is σ = 8378313344. Its totient is φ = 8378313342.

The previous prime is 8378313341. The next prime is 8378313367. The reversal of 8378313343 is 3433138738.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8378313343 - 2¹ = 8378313341 is a prime.

It is a super-2 number, since 2×8378313343² (a number of 21 digits) contains 22 as substring.

Together with 8378313341, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8378313343.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8378313341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4189156671 + 4189156672.

It is an arithmetic number, because the mean of its divisors is an integer number (4189156672).

Almost surely, 2^8378313343 is an apocalyptic number.

8378313343 is a deficient number, since it is larger than the sum of its proper divisors (1).

8378313343 is an equidigital number, since it uses as much as digits as its factorization.

8378313343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 43.

The square root of 8378313343 is about 91533.1270251377. The cubic root of 8378313343 is about 2031.0418219181.

The spelling of 8378313343 in words is "eight billion, three hundred seventy-eight million, three hundred thirteen thousand, three hundred forty-three".