216103830 has 64 divisors (see below), whose sum is σ = 550914048. Its totient is φ = 54064640.

The previous prime is 216103819. The next prime is 216103841. The reversal of 216103830 is 38301612.

216103830 is digitally balanced in base 3, 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 (216103819) and next prime (216103841).

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 216103830.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 249979 + ... + 250841.

It is an arithmetic number, because the mean of its divisors is an integer number (8608032).

Almost surely, 2^216103830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 216103830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275457024).

216103830 is an abundant number, since it is smaller than the sum of its proper divisors (334810218).

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

216103830 is a wasteful number, since it uses less digits than its factorization.

216103830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 216103830 is about 14700.4704006368. The cubic root of 216103830 is about 600.0961234885.

The spelling of 216103830 in words is "two hundred sixteen million, one hundred three thousand, eight hundred thirty".