531230056 has 16 divisors (see below), whose sum is σ = 1138350240. Its totient is φ = 227670000.

The previous prime is 531230047. The next prime is 531230083. The reversal of 531230056 is 650032135.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 531230056.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4743070 + ... + 4743181.

It is an arithmetic number, because the mean of its divisors is an integer number (71146890).

Almost surely, 2^531230056 is an apocalyptic number.

531230056 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

531230056 is an abundant number, since it is smaller than the sum of its proper divisors (607120184).

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

531230056 is a wasteful number, since it uses less digits than its factorization.

531230056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9486264 (or 9486260 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 531230056 is about 23048.4284930665. The cubic root of 531230056 is about 809.8928151623.

The spelling of 531230056 in words is "five hundred thirty-one million, two hundred thirty thousand, fifty-six".