531543317 has 4 divisors (see below), whose sum is σ = 554653920. Its totient is φ = 508432716.

The previous prime is 531543289. The next prime is 531543319. The reversal of 531543317 is 713345135.

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, and also an emirpimes, since its reverse is a distinct semiprime: 713345135 = 5 ⋅142669027.

It is a cyclic number.

It is not a de Polignac number, because 531543317 - 2¹⁰ = 531542293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531543319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11555267 + ... + 11555312.

It is an arithmetic number, because the mean of its divisors is an integer number (138663480).

Almost surely, 2^531543317 is an apocalyptic number.

It is an amenable number.

531543317 is a deficient number, since it is larger than the sum of its proper divisors (23110603).

531543317 is a wasteful number, since it uses less digits than its factorization.

531543317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23110602.

The product of its digits is 18900, while the sum is 32.

The square root of 531543317 is about 23055.2232042980. The cubic root of 531543317 is about 810.0519790857.

The spelling of 531543317 in words is "five hundred thirty-one million, five hundred forty-three thousand, three hundred seventeen".