355218223 has 2 divisors, whose sum is σ = 355218224. Its totient is φ = 355218222.

The previous prime is 355218211. The next prime is 355218271. The reversal of 355218223 is 322812553.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 355218223 - 2²¹ = 353121071 is a prime.

It is a super-3 number, since 3×355218223³ (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 (355218203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177609111 + 177609112.

It is an arithmetic number, because the mean of its divisors is an integer number (177609112).

Almost surely, 2^355218223 is an apocalyptic number.

355218223 is a deficient number, since it is larger than the sum of its proper divisors (1).

355218223 is an equidigital number, since it uses as much as digits as its factorization.

355218223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14400, while the sum is 31.

The square root of 355218223 is about 18847.2338288673. The cubic root of 355218223 is about 708.2149318991.

The spelling of 355218223 in words is "three hundred fifty-five million, two hundred eighteen thousand, two hundred twenty-three".