218423083 has 2 divisors, whose sum is σ = 218423084. Its totient is φ = 218423082.

The previous prime is 218423063. The next prime is 218423129. The reversal of 218423083 is 380324812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218423083 - 2⁹ = 218422571 is a prime.

It is not a weakly prime, because it can be changed into another prime (218423063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109211541 + 109211542.

It is an arithmetic number, because the mean of its divisors is an integer number (109211542).

Almost surely, 2^218423083 is an apocalyptic number.

218423083 is a deficient number, since it is larger than the sum of its proper divisors (1).

218423083 is an equidigital number, since it uses as much as digits as its factorization.

218423083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 218423083 is about 14779.1435137494. The cubic root of 218423083 is about 602.2352577342.

Adding to 218423083 its reverse (380324812), we get a palindrome (598747895).

The spelling of 218423083 in words is "two hundred eighteen million, four hundred twenty-three thousand, eighty-three".