531304313 has 4 divisors (see below), whose sum is σ = 532361088. Its totient is φ = 530247540.

The previous prime is 531304297. The next prime is 531304337. The reversal of 531304313 is 313403135.

It is a happy number.

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 531304313 - 2⁴ = 531304297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531304513) 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, 527633 + ... + 528638.

It is an arithmetic number, because the mean of its divisors is an integer number (133090272).

Almost surely, 2^531304313 is an apocalyptic number.

It is an amenable number.

531304313 is a deficient number, since it is larger than the sum of its proper divisors (1056775).

531304313 is a wasteful number, since it uses less digits than its factorization.

531304313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056774.

The product of its (nonzero) digits is 1620, while the sum is 23.

The square root of 531304313 is about 23050.0393275153. The cubic root of 531304313 is about 809.9305498550.

Adding to 531304313 its reverse (313403135), we get a palindrome (844707448).

The spelling of 531304313 in words is "five hundred thirty-one million, three hundred four thousand, three hundred thirteen".