343400443 has 4 divisors (see below), whose sum is σ = 343461168. Its totient is φ = 343339720.

The previous prime is 343400417. The next prime is 343400479. The reversal of 343400443 is 344004343.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344004343 = 43 ⋅8000101.

It is a cyclic number.

It is not a de Polignac number, because 343400443 - 2¹³ = 343392251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (323400443) 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, 20896 + ... + 33517.

It is an arithmetic number, because the mean of its divisors is an integer number (85865292).

Almost surely, 2^343400443 is an apocalyptic number.

343400443 is a deficient number, since it is larger than the sum of its proper divisors (60725).

343400443 is an equidigital number, since it uses as much as digits as its factorization.

343400443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60724.

The product of its (nonzero) digits is 6912, while the sum is 25.

The square root of 343400443 is about 18531.0669687420. The cubic root of 343400443 is about 700.2723042623.

Adding to 343400443 its reverse (344004343), we get a palindrome (687404786).

The spelling of 343400443 in words is "three hundred forty-three million, four hundred thousand, four hundred forty-three".