530509831 has 4 divisors (see below), whose sum is σ = 531552600. Its totient is φ = 529467064.

The previous prime is 530509823. The next prime is 530509879. The reversal of 530509831 is 138905035.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 530509831 - 2³ = 530509823 is a prime.

It is a super-2 number, since 2×530509831² = 562881361575297122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (530509891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520621 + ... + 521638.

It is an arithmetic number, because the mean of its divisors is an integer number (132888150).

Almost surely, 2^530509831 is an apocalyptic number.

530509831 is a deficient number, since it is larger than the sum of its proper divisors (1042769).

530509831 is a wasteful number, since it uses less digits than its factorization.

530509831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042768.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 530509831 is about 23032.7990266055. The cubic root of 530509831 is about 809.5266405619.

The spelling of 530509831 in words is "five hundred thirty million, five hundred nine thousand, eight hundred thirty-one".