216231610 has 48 divisors (see below), whose sum is σ = 454132224. Its totient is φ = 73912608.

The previous prime is 216231599. The next prime is 216231623. The reversal of 216231610 is 16132612.

It is a super-2 number, since 2×216231610² = 93512218326384200, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 297067 + ... + 297793.

It is an arithmetic number, because the mean of its divisors is an integer number (9461088).

Almost surely, 2^216231610 is an apocalyptic number.

216231610 is an abundant number, since it is smaller than the sum of its proper divisors (237900614).

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

216231610 is a wasteful number, since it uses less digits than its factorization.

216231610 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 216231610 is about 14704.8158778000. The cubic root of 216231610 is about 600.2143770987.

The spelling of 216231610 in words is "two hundred sixteen million, two hundred thirty-one thousand, six hundred ten".