531683217 has 32 divisors (see below), whose sum is σ = 849820160. Its totient is φ = 326592000.

The previous prime is 531683209. The next prime is 531683233. The reversal of 531683217 is 712386135.

It is not a de Polignac number, because 531683217 - 2³ = 531683209 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531683267) 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 31 ways as a sum of consecutive naturals, for example, 262593 + ... + 264609.

It is an arithmetic number, because the mean of its divisors is an integer number (26556880).

Almost surely, 2^531683217 is an apocalyptic number.

It is an amenable number.

531683217 is a deficient number, since it is larger than the sum of its proper divisors (318136943).

531683217 is a wasteful number, since it uses less digits than its factorization.

531683217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2790 (or 2784 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 531683217 is about 23058.2570243286. The cubic root of 531683217 is about 810.1230402939.

The spelling of 531683217 in words is "five hundred thirty-one million, six hundred eighty-three thousand, two hundred seventeen".