531393 has 4 divisors (see below), whose sum is σ = 708528. Its totient is φ = 354260.

The previous prime is 531383. The next prime is 531457. The reversal of 531393 is 393135.

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 531393 - 2¹⁷ = 400321 is a prime.

It is a D-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 3 ways as a sum of consecutive naturals, for example, 88563 + ... + 88568.

It is an arithmetic number, because the mean of its divisors is an integer number (177132).

531393 is a Friedman number, since it can be written as 9^(3+3)-51+3, using all its digits and the basic arithmetic operations.

2⁵³¹³⁹³ is an apocalyptic number.

It is an amenable number.

531393 is a deficient number, since it is larger than the sum of its proper divisors (177135).

531393 is a wasteful number, since it uses less digits than its factorization.

531393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177134.

The product of its digits is 1215, while the sum is 24.

The square root of 531393 is about 728.9670774459. The cubic root of 531393 is about 80.9975612739.

The spelling of 531393 in words is "five hundred thirty-one thousand, three hundred ninety-three".