218302030 has 16 divisors (see below), whose sum is σ = 393140304. Its totient is φ = 87277120.

The previous prime is 218302027. The next prime is 218302033. The reversal of 218302030 is 30203812.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (218302027) and next prime (218302033).

It is a junction number, because it is equal to n+sod(n) for n = 218301989 and 218302007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218302033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22185 + ... + 30475.

It is an arithmetic number, because the mean of its divisors is an integer number (24571269).

Almost surely, 2^218302030 is an apocalyptic number.

218302030 is a deficient number, since it is larger than the sum of its proper divisors (174838274).

218302030 is a wasteful number, since it uses less digits than its factorization.

218302030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10931.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 218302030 is about 14775.0475464548. The cubic root of 218302030 is about 602.1239815577.

Adding to 218302030 its reverse (30203812), we get a palindrome (248505842).

The spelling of 218302030 in words is "two hundred eighteen million, three hundred two thousand, thirty".