531363 has 8 divisors (see below), whose sum is σ = 809728. Its totient is φ = 303624.

The previous prime is 531359. The next prime is 531383. The reversal of 531363 is 363135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 531363 - 2² = 531359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 25303 = 531363 / (5 + 3 + 1 + 3 + 6 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (531343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12631 + ... + 12672.

It is an arithmetic number, because the mean of its divisors is an integer number (101216).

2⁵³¹³⁶³ is an apocalyptic number.

531363 is a deficient number, since it is larger than the sum of its proper divisors (278365).

531363 is a wasteful number, since it uses less digits than its factorization.

531363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25313.

The product of its digits is 810, while the sum is 21.

The square root of 531363 is about 728.9465000945. The cubic root of 531363 is about 80.9960369956.

Adding to 531363 its reverse (363135), we get a palindrome (894498).

The spelling of 531363 in words is "five hundred thirty-one thousand, three hundred sixty-three".