531693 has 6 divisors (see below), whose sum is σ = 768014. Its totient is φ = 354456.

The previous prime is 531689. The next prime is 531701. The reversal of 531693 is 396135.

531693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 381924 + 149769 = 618^2 + 387^2 .

It is not a de Polignac number, because 531693 - 2² = 531689 is a prime.

It is a d-powerful number, because it can be written as 5³ + 3⁴ + 6² + 1 + 9 + 3¹² .

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531613) 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, 29530 + ... + 29547.

2⁵³¹⁶⁹³ is an apocalyptic number.

It is an amenable number.

531693 is a deficient number, since it is larger than the sum of its proper divisors (236321).

531693 is a wasteful number, since it uses less digits than its factorization.

531693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59083 (or 59080 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 531693 is about 729.1728190217. The cubic root of 531693 is about 81.0128009033.

The spelling of 531693 in words is "five hundred thirty-one thousand, six hundred ninety-three".