531723 has 6 divisors (see below), whose sum is σ = 710652. Its totient is φ = 353640.

The previous prime is 531701. The next prime is 531731. The reversal of 531723 is 327135.

It is a happy number.

It is not a de Polignac number, because 531723 - 2¹² = 527627 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531723.

It is not an unprimeable number, because it can be changed into a prime (531793) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1053 + ... + 1473.

It is an arithmetic number, because the mean of its divisors is an integer number (118442).

2⁵³¹⁷²³ is an apocalyptic number.

531723 is a deficient number, since it is larger than the sum of its proper divisors (178929).

531723 is an frugal number, since it uses more digits than its factorization.

531723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 424 counting only the distinct ones).

The product of its digits is 630, while the sum is 21.

The square root of 531723 is about 729.1933899865. The cubic root of 531723 is about 81.0143245509.

Adding to 531723 its reverse (327135), we get a palindrome (858858).

It can be divided in two parts, 53 and 1723, that multiplied together give a palindrome (91319).

The spelling of 531723 in words is "five hundred thirty-one thousand, seven hundred twenty-three".