531126316 has 12 divisors (see below), whose sum is σ = 1062252688. Its totient is φ = 227625552.

The previous prime is 531126307. The next prime is 531126331. The reversal of 531126316 is 613621135.

531126316 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 18968797 = 531126316 / (5 + 3 + 1 + 1 + 2 + 6 + 3 + 1 + 6).

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, 9484371 + ... + 9484426.

Almost surely, 2^531126316 is an apocalyptic number.

It is an amenable number.

531126316 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

531126316 is a wasteful number, since it uses less digits than its factorization.

531126316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18968808 (or 18968806 counting only the distinct ones).

The product of its digits is 3240, while the sum is 28.

The square root of 531126316 is about 23046.1779043728. The cubic root of 531126316 is about 809.8400923985.

The spelling of 531126316 in words is "five hundred thirty-one million, one hundred twenty-six thousand, three hundred sixteen".