216031195 has 16 divisors (see below), whose sum is σ = 264670560. Its totient is φ = 169228800.

The previous prime is 216031187. The next prime is 216031199. The reversal of 216031195 is 591130612.

It is not a de Polignac number, because 216031195 - 2³ = 216031187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216031199) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 72036 + ... + 74974.

It is an arithmetic number, because the mean of its divisors is an integer number (16541910).

Almost surely, 2^216031195 is an apocalyptic number.

216031195 is a deficient number, since it is larger than the sum of its proper divisors (48639365).

216031195 is a wasteful number, since it uses less digits than its factorization.

216031195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3246.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 216031195 is about 14697.9996938359. Note that the first 3 decimals coincide. The cubic root of 216031195 is about 600.0288828689.

The spelling of 216031195 in words is "two hundred sixteen million, thirty-one thousand, one hundred ninety-five".