343054391 has 2 divisors, whose sum is σ = 343054392. Its totient is φ = 343054390.

The previous prime is 343054381. The next prime is 343054433. The reversal of 343054391 is 193450343.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343054391 - 2¹⁰ = 343053367 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (343054331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171527195 + 171527196.

It is an arithmetic number, because the mean of its divisors is an integer number (171527196).

Almost surely, 2^343054391 is an apocalyptic number.

343054391 is a deficient number, since it is larger than the sum of its proper divisors (1).

343054391 is an equidigital number, since it uses as much as digits as its factorization.

343054391 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 343054391 is about 18521.7275382185. The cubic root of 343054391 is about 700.0369987247.

The spelling of 343054391 in words is "three hundred forty-three million, fifty-four thousand, three hundred ninety-one".