820531214 has 8 divisors (see below), whose sum is σ = 1303196688. Its totient is φ = 386132320.

The previous prime is 820531211. The next prime is 820531247. The reversal of 820531214 is 412135028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820531211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12066602 + ... + 12066669.

It is an arithmetic number, because the mean of its divisors is an integer number (162899586).

Almost surely, 2^820531214 is an apocalyptic number.

820531214 is a deficient number, since it is larger than the sum of its proper divisors (482665474).

820531214 is a wasteful number, since it uses less digits than its factorization.

820531214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24133290.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 820531214 is about 28644.9160236158. The cubic root of 820531214 is about 936.1922370087.

The spelling of 820531214 in words is "eight hundred twenty million, five hundred thirty-one thousand, two hundred fourteen".