531023 has 2 divisors, whose sum is σ = 531024. Its totient is φ = 531022.

The previous prime is 531017. The next prime is 531043. The reversal of 531023 is 320135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531023 - 2⁸ = 530767 is a prime.

It is a nialpdrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 530989 and 531007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265511 + 265512.

It is an arithmetic number, because the mean of its divisors is an integer number (265512).

2⁵³¹⁰²³ is an apocalyptic number.

531023 is a deficient number, since it is larger than the sum of its proper divisors (1).

531023 is an equidigital number, since it uses as much as digits as its factorization.

531023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 531023 is about 728.7132495022. The cubic root of 531023 is about 80.9787578296.

Adding to 531023 its reverse (320135), we get a palindrome (851158).

The spelling of 531023 in words is "five hundred thirty-one thousand, twenty-three".