531868317 has 4 divisors (see below), whose sum is σ = 709157760. Its totient is φ = 354578876.

The previous prime is 531868297. The next prime is 531868331. The reversal of 531868317 is 713868135.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 531868317 - 2²² = 527674013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531868367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88644717 + ... + 88644722.

It is an arithmetic number, because the mean of its divisors is an integer number (177289440).

Almost surely, 2^531868317 is an apocalyptic number.

It is an amenable number.

531868317 is a deficient number, since it is larger than the sum of its proper divisors (177289443).

531868317 is a wasteful number, since it uses less digits than its factorization.

531868317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177289442.

The product of its digits is 120960, while the sum is 42.

The square root of 531868317 is about 23062.2704216215. The cubic root of 531868317 is about 810.2170413656.

The spelling of 531868317 in words is "five hundred thirty-one million, eight hundred sixty-eight thousand, three hundred seventeen".