343245403 has 2 divisors, whose sum is σ = 343245404. Its totient is φ = 343245402.

The previous prime is 343245401. The next prime is 343245439. The reversal of 343245403 is 304542343.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 343245403 - 2¹ = 343245401 is a prime.

Together with 343245401, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (343245401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171622701 + 171622702.

It is an arithmetic number, because the mean of its divisors is an integer number (171622702).

Almost surely, 2^343245403 is an apocalyptic number.

343245403 is a deficient number, since it is larger than the sum of its proper divisors (1).

343245403 is an equidigital number, since it uses as much as digits as its factorization.

343245403 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 28.

The square root of 343245403 is about 18526.8832511030. The cubic root of 343245403 is about 700.1669010189.

Adding to 343245403 its reverse (304542343), we get a palindrome (647787746).

The spelling of 343245403 in words is "three hundred forty-three million, two hundred forty-five thousand, four hundred three".