354220343 has 2 divisors, whose sum is σ = 354220344. Its totient is φ = 354220342.

The previous prime is 354220337. The next prime is 354220393. The reversal of 354220343 is 343022453.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 354220343 - 2⁴ = 354220327 is a prime.

It is a super-3 number, since 3×354220343³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354220303) 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, 177110171 + 177110172.

It is an arithmetic number, because the mean of its divisors is an integer number (177110172).

Almost surely, 2^354220343 is an apocalyptic number.

354220343 is a deficient number, since it is larger than the sum of its proper divisors (1).

354220343 is an equidigital number, since it uses as much as digits as its factorization.

354220343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 26.

The square root of 354220343 is about 18820.7423604915. The cubic root of 354220343 is about 707.5511368267.

Adding to 354220343 its reverse (343022453), we get a palindrome (697242796).

The spelling of 354220343 in words is "three hundred fifty-four million, two hundred twenty thousand, three hundred forty-three".