531135221234347 has 2 divisors, whose sum is σ = 531135221234348. Its totient is φ = 531135221234346.

The previous prime is 531135221234207. The next prime is 531135221234393. The reversal of 531135221234347 is 743432122531135.

It is an a-pointer prime, because the next prime (531135221234393) can be obtained adding 531135221234347 to its sum of digits (46).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 531135221234347 - 2¹¹ = 531135221232299 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 531135221234297 and 531135221234306.

It is not a weakly prime, because it can be changed into another prime (531135221235347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265567610617173 + 265567610617174.

It is an arithmetic number, because the mean of its divisors is an integer number (265567610617174).

Almost surely, 2^{531135221234347} is an apocalyptic number.

531135221234347 is a deficient number, since it is larger than the sum of its proper divisors (1).

531135221234347 is an equidigital number, since it uses as much as digits as its factorization.

531135221234347 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1814400, while the sum is 46.

The spelling of 531135221234347 in words is "five hundred thirty-one trillion, one hundred thirty-five billion, two hundred twenty-one million, two hundred thirty-four thousand, three hundred forty-seven".