216230310 has 160 divisors (see below), whose sum is σ = 632282112. Its totient is φ = 52807680.

The previous prime is 216230309. The next prime is 216230323. The reversal of 216230310 is 13032612.

It is a super-2 number, since 2×216230310² = 93511093925392200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 564379 + ... + 564761.

Almost surely, 2^216230310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216230310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316141056).

216230310 is an abundant number, since it is smaller than the sum of its proper divisors (416051802).

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

216230310 is a wasteful number, since it uses less digits than its factorization.

216230310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460 (or 451 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 216230310 is about 14704.7716745280. The cubic root of 216230310 is about 600.2131742523.

Adding to 216230310 its reverse (13032612), we get a palindrome (229262922).

The spelling of 216230310 in words is "two hundred sixteen million, two hundred thirty thousand, three hundred ten".