531350231 has 2 divisors, whose sum is σ = 531350232. Its totient is φ = 531350230.

The previous prime is 531350227. The next prime is 531350233. The reversal of 531350231 is 132053135.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531350231 - 2² = 531350227 is a prime.

It is a super-2 number, since 2×531350231² = 564666135967506722, which contains 22 as substring.

Together with 531350233, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 531350197 and 531350206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531350233) 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, 265675115 + 265675116.

It is an arithmetic number, because the mean of its divisors is an integer number (265675116).

Almost surely, 2^531350231 is an apocalyptic number.

531350231 is a deficient number, since it is larger than the sum of its proper divisors (1).

531350231 is an equidigital number, since it uses as much as digits as its factorization.

531350231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1350, while the sum is 23.

The square root of 531350231 is about 23051.0353563566. The cubic root of 531350231 is about 809.9538819447.

The spelling of 531350231 in words is "five hundred thirty-one million, three hundred fifty thousand, two hundred thirty-one".