531663012 has 18 divisors (see below), whose sum is σ = 1343926038. Its totient is φ = 177220992.

The previous prime is 531662993. The next prime is 531663029. The reversal of 531663012 is 210366135.

531663012 is a `hidden beast` number, since 5 + 3 + 16 + 630 + 12 = 666.

It can be written as a sum of positive squares in only one way, i.e., 518746176 + 12916836 = 22776^2 + 3594^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×531663012³ (a number of 27 digits) contains 333 as substring.

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 in 5 ways as a sum of consecutive naturals, for example, 7384173 + ... + 7384244.

Almost surely, 2^531663012 is an apocalyptic number.

It is an amenable number.

531663012 is an abundant number, since it is smaller than the sum of its proper divisors (812263026).

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

531663012 is a wasteful number, since it uses less digits than its factorization.

531663012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14768427 (or 14768422 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 531663012 is about 23057.8188907798. The cubic root of 531663012 is about 810.1127780784.

The spelling of 531663012 in words is "five hundred thirty-one million, six hundred sixty-three thousand, twelve".