531716128 has 12 divisors (see below), whose sum is σ = 1046816190. Its totient is φ = 265858048.

The previous prime is 531716117. The next prime is 531716137. The reversal of 531716128 is 821617135.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 431475984 + 100240144 = 20772^2 + 10012^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 531716093 and 531716102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8308033 + ... + 8308096.

Almost surely, 2^531716128 is an apocalyptic number.

It is an amenable number.

531716128 is a deficient number, since it is larger than the sum of its proper divisors (515100062).

531716128 is a wasteful number, since it uses less digits than its factorization.

531716128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16616139 (or 16616131 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 531716128 is about 23058.9706621957. The cubic root of 531716128 is about 810.1397553907.

The spelling of 531716128 in words is "five hundred thirty-one million, seven hundred sixteen thousand, one hundred twenty-eight".