531118116 has 81 divisors (see below), whose sum is σ = 1411912411. Its totient is φ = 168327984.

The previous prime is 531118111. The next prime is 531118117. The reversal of 531118116 is 611811135.

It is a happy number.

The square root of 531118116 is 23046.

It is a perfect power (a square), and thus also a powerful number.

531118116 is a `hidden beast` number, since 531 + 1 + 18 + 116 = 666.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 531118116.

It is not an unprimeable number, because it can be changed into a prime (531118111) by changing a digit.

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 in 26 ways as a sum of consecutive naturals, for example, 3180265 + ... + 3180431.

Almost surely, 2^531118116 is an apocalyptic number.

531118116 is the 23046-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 531118116

531118116 is an abundant number, since it is smaller than the sum of its proper divisors (880794295).

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

531118116 is a wasteful number, since it uses less digits than its factorization.

531118116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 390 (or 195 counting only the distinct ones).

The product of its digits is 720, while the sum is 27.

The cubic root of 531118116 is about 809.8359247000.

The spelling of 531118116 in words is "five hundred thirty-one million, one hundred eighteen thousand, one hundred sixteen".