354218204317 has 2 divisors, whose sum is σ = 354218204318. Its totient is φ = 354218204316.

The previous prime is 354218204237. The next prime is 354218204401. The reversal of 354218204317 is 713402812453.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228580566201 + 125637638116 = 478101^2 + 354454^2 .

It is a cyclic number.

It is not a de Polignac number, because 354218204317 - 2⁷ = 354218204189 is a prime.

It is a super-3 number, since 3×354218204317³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 354218204317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (354218204117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177109102158 + 177109102159.

It is an arithmetic number, because the mean of its divisors is an integer number (177109102159).

Almost surely, 2^354218204317 is an apocalyptic number.

It is an amenable number.

354218204317 is a deficient number, since it is larger than the sum of its proper divisors (1).

354218204317 is an equidigital number, since it uses as much as digits as its factorization.

354218204317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 161280, while the sum is 40.

The spelling of 354218204317 in words is "three hundred fifty-four billion, two hundred eighteen million, two hundred four thousand, three hundred seventeen".