347813 has 2 divisors, whose sum is σ = 347814. Its totient is φ = 347812.

The previous prime is 347801. The next prime is 347821. The reversal of 347813 is 318743.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332929 + 14884 = 577^2 + 122^2 .

It is an emirp because it is prime and its reverse (318743) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 347813 - 2¹⁸ = 85669 is a prime.

It is a Sophie Germain prime.

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 347813.

It is not a weakly prime, because it can be changed into another prime (347873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173906 + 173907.

It is an arithmetic number, because the mean of its divisors is an integer number (173907).

2³⁴⁷⁸¹³ is an apocalyptic number.

It is an amenable number.

347813 is a deficient number, since it is larger than the sum of its proper divisors (1).

347813 is an equidigital number, since it uses as much as digits as its factorization.

347813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 347813 is about 589.7567295080. The cubic root of 347813 is about 70.3258953573.

The spelling of 347813 in words is "three hundred forty-seven thousand, eight hundred thirteen".