531229 has 2 divisors, whose sum is σ = 531230. Its totient is φ = 531228.

The previous prime is 531203. The next prime is 531239. The reversal of 531229 is 922135.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 458329 + 72900 = 677^2 + 270^2 .

It is a cyclic number.

It is not a de Polignac number, because 531229 - 2⁵ = 531197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265614 + 265615.

It is an arithmetic number, because the mean of its divisors is an integer number (265615).

2⁵³¹²²⁹ is an apocalyptic number.

It is an amenable number.

531229 is a deficient number, since it is larger than the sum of its proper divisors (1).

531229 is an equidigital number, since it uses as much as digits as its factorization.

531229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 540, while the sum is 22.

The square root of 531229 is about 728.8545808321. The cubic root of 531229 is about 80.9892278516.

The spelling of 531229 in words is "five hundred thirty-one thousand, two hundred twenty-nine".