531323239847 has 2 divisors, whose sum is σ = 531323239848. Its totient is φ = 531323239846.

The previous prime is 531323239793. The next prime is 531323239861. The reversal of 531323239847 is 748932323135.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531323239847 - 2¹⁶ = 531323174311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531323239795 and 531323239804.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (531323239897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265661619923 + 265661619924.

It is an arithmetic number, because the mean of its divisors is an integer number (265661619924).

Almost surely, 2^531323239847 is an apocalyptic number.

531323239847 is a deficient number, since it is larger than the sum of its proper divisors (1).

531323239847 is an equidigital number, since it uses as much as digits as its factorization.

531323239847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 50.

The spelling of 531323239847 in words is "five hundred thirty-one billion, three hundred twenty-three million, two hundred thirty-nine thousand, eight hundred forty-seven".