216303030 has 48 divisors (see below), whose sum is σ = 591991920. Its totient is φ = 54644544.

The previous prime is 216303023. The next prime is 216303037. The reversal of 216303030 is 30303612.

It is a happy number.

216303030 is a `hidden beast` number, since 2 + 1 + 630 + 3 + 0 + 30 = 666.

216303030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (216303023) and next prime (216303037).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 216302994 and 216303012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216303037) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61537 + ... + 64956.

It is an arithmetic number, because the mean of its divisors is an integer number (12333165).

Almost surely, 2^216303030 is an apocalyptic number.

216303030 is an abundant number, since it is smaller than the sum of its proper divisors (375688890).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216303030 is a wasteful number, since it uses less digits than its factorization.

216303030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126525 (or 126522 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 216303030 is about 14707.2441334194. The cubic root of 216303030 is about 600.2804522238.

Adding to 216303030 its reverse (30303612), we get a palindrome (246606642).

The spelling of 216303030 in words is "two hundred sixteen million, three hundred three thousand, thirty".