343394819 has 2 divisors, whose sum is σ = 343394820. Its totient is φ = 343394818.

The previous prime is 343394797. The next prime is 343394833. The reversal of 343394819 is 918493343.

It is a strong prime.

It is an emirp because it is prime and its reverse (918493343) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343394819 is a prime.

It is a super-2 number, since 2×343394819² = 235840003432085522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 343394819.

It is not a weakly prime, because it can be changed into another prime (343394839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171697409 + 171697410.

It is an arithmetic number, because the mean of its divisors is an integer number (171697410).

Almost surely, 2^343394819 is an apocalyptic number.

343394819 is a deficient number, since it is larger than the sum of its proper divisors (1).

343394819 is an equidigital number, since it uses as much as digits as its factorization.

343394819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 279936, while the sum is 44.

The square root of 343394819 is about 18530.9152229457. The cubic root of 343394819 is about 700.2684813659.

The spelling of 343394819 in words is "three hundred forty-three million, three hundred ninety-four thousand, eight hundred nineteen".