347078813 has 4 divisors (see below), whose sum is σ = 347985408. Its totient is φ = 346172220.

The previous prime is 347078779. The next prime is 347078819. The reversal of 347078813 is 318870743.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 318870743 = 31 ⋅10286153.

It is a cyclic number.

It is not a de Polignac number, because 347078813 - 2¹⁸ = 346816669 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (347078819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 452723 + ... + 453488.

It is an arithmetic number, because the mean of its divisors is an integer number (86996352).

Almost surely, 2^347078813 is an apocalyptic number.

It is an amenable number.

347078813 is a deficient number, since it is larger than the sum of its proper divisors (906595).

347078813 is an equidigital number, since it uses as much as digits as its factorization.

347078813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906594.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 347078813 is about 18630.0513418509. The cubic root of 347078813 is about 702.7637762752.

The spelling of 347078813 in words is "three hundred forty-seven million, seventy-eight thousand, eight hundred thirteen".