531504329 has 2 divisors, whose sum is σ = 531504330. Its totient is φ = 531504328.

The previous prime is 531504317. The next prime is 531504349. The reversal of 531504329 is 923405135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 465049225 + 66455104 = 21565^2 + 8152^2 .

It is a cyclic number.

It is not a de Polignac number, because 531504329 - 2²⁸ = 263068873 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531504295 and 531504304.

It is not a weakly prime, because it can be changed into another prime (531504349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265752164 + 265752165.

It is an arithmetic number, because the mean of its divisors is an integer number (265752165).

Almost surely, 2^531504329 is an apocalyptic number.

It is an amenable number.

531504329 is a deficient number, since it is larger than the sum of its proper divisors (1).

531504329 is an equidigital number, since it uses as much as digits as its factorization.

531504329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16200, while the sum is 32.

The square root of 531504329 is about 23054.3776537125. The cubic root of 531504329 is about 810.0321731873.

The spelling of 531504329 in words is "five hundred thirty-one million, five hundred four thousand, three hundred twenty-nine".