212783205 has 16 divisors (see below), whose sum is σ = 346224960. Its totient is φ = 111560448.

The previous prime is 212783183. The next prime is 212783209. The reversal of 212783205 is 502387212.

212783205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212783205 - 2⁶ = 212783141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212783209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119332 + ... + 121101.

It is an arithmetic number, because the mean of its divisors is an integer number (21639060).

Almost surely, 2^212783205 is an apocalyptic number.

It is an amenable number.

212783205 is a deficient number, since it is larger than the sum of its proper divisors (133441755).

212783205 is a wasteful number, since it uses less digits than its factorization.

212783205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240500.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 212783205 is about 14587.0903541453. The cubic root of 212783205 is about 597.0065766414.

The spelling of 212783205 in words is "two hundred twelve million, seven hundred eighty-three thousand, two hundred five".