531683216 has 40 divisors (see below), whose sum is σ = 1080734400. Its totient is φ = 253043840.

The previous prime is 531683209. The next prime is 531683233. The reversal of 531683216 is 612386135.

It is a super-2 number, since 2×531683216² = 565374084352205312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24875 + ... + 41013.

It is an arithmetic number, because the mean of its divisors is an integer number (27018360).

Almost surely, 2^531683216 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531683216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (540367200).

531683216 is an abundant number, since it is smaller than the sum of its proper divisors (549051184).

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

531683216 is a wasteful number, since it uses less digits than its factorization.

531683216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16247 (or 16241 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 531683216 is about 23058.2570026444. The cubic root of 531683216 is about 810.1230397860.

The spelling of 531683216 in words is "five hundred thirty-one million, six hundred eighty-three thousand, two hundred sixteen".