531085868 has 6 divisors (see below), whose sum is σ = 929400276. Its totient is φ = 265542932.

The previous prime is 531085837. The next prime is 531085871. The reversal of 531085868 is 868580135.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66385730 + ... + 66385737.

It is an arithmetic number, because the mean of its divisors is an integer number (154900046).

Almost surely, 2^531085868 is an apocalyptic number.

It is an amenable number.

531085868 is a deficient number, since it is larger than the sum of its proper divisors (398314408).

531085868 is a wasteful number, since it uses less digits than its factorization.

531085868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132771471 (or 132771469 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 44.

The square root of 531085868 is about 23045.3003451897. The cubic root of 531085868 is about 809.8195340475.

The spelling of 531085868 in words is "five hundred thirty-one million, eighty-five thousand, eight hundred sixty-eight".