531230251 has 2 divisors, whose sum is σ = 531230252. Its totient is φ = 531230250.

The previous prime is 531230243. The next prime is 531230261. The reversal of 531230251 is 152032135.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 531230251 - 2³ = 531230243 is a prime.

It is a super-3 number, since 3×531230251³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (531230261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265615125 + 265615126.

It is an arithmetic number, because the mean of its divisors is an integer number (265615126).

Almost surely, 2^531230251 is an apocalyptic number.

531230251 is a deficient number, since it is larger than the sum of its proper divisors (1).

531230251 is an equidigital number, since it uses as much as digits as its factorization.

531230251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 531230251 is about 23048.4327232895. The cubic root of 531230251 is about 809.8929142588.

Adding to 531230251 its reverse (152032135), we get a palindrome (683262386).

The spelling of 531230251 in words is "five hundred thirty-one million, two hundred thirty thousand, two hundred fifty-one".