343342403 has 2 divisors, whose sum is σ = 343342404. Its totient is φ = 343342402.

The previous prime is 343342399. The next prime is 343342409. The reversal of 343342403 is 304243343.

It is a weak prime.

It is an emirp because it is prime and its reverse (304243343) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 343342403 - 2² = 343342399 is a prime.

It is a super-3 number, since 3×343342403³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (343342409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171671201 + 171671202.

It is an arithmetic number, because the mean of its divisors is an integer number (171671202).

Almost surely, 2^343342403 is an apocalyptic number.

343342403 is a deficient number, since it is larger than the sum of its proper divisors (1).

343342403 is an equidigital number, since it uses as much as digits as its factorization.

343342403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 26.

The square root of 343342403 is about 18529.5008837259. The cubic root of 343342403 is about 700.2328497466.

Adding to 343342403 its reverse (304243343), we get a palindrome (647585746).

The spelling of 343342403 in words is "three hundred forty-three million, three hundred forty-two thousand, four hundred three".