943945313 has 2 divisors, whose sum is σ = 943945314. Its totient is φ = 943945312.

The previous prime is 943945309. The next prime is 943945339. The reversal of 943945313 is 313549349.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 938074384 + 5870929 = 30628^2 + 2423^2 .

It is a cyclic number.

It is not a de Polignac number, because 943945313 - 2² = 943945309 is a prime.

It is not a weakly prime, because it can be changed into another prime (943945363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471972656 + 471972657.

It is an arithmetic number, because the mean of its divisors is an integer number (471972657).

Almost surely, 2^943945313 is an apocalyptic number.

It is an amenable number.

943945313 is a deficient number, since it is larger than the sum of its proper divisors (1).

943945313 is an equidigital number, since it uses as much as digits as its factorization.

943945313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 41.

The square root of 943945313 is about 30723.6930234632. The cubic root of 943945313 is about 980.9546829642.

The spelling of 943945313 in words is "nine hundred forty-three million, nine hundred forty-five thousand, three hundred thirteen".