53243113531 has 2 divisors, whose sum is σ = 53243113532. Its totient is φ = 53243113530.

The previous prime is 53243113493. The next prime is 53243113591. The reversal of 53243113531 is 13531134235.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53243113531 - 2¹¹ = 53243111483 is a prime.

It is a super-2 number, since 2×53243113531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53243113493 and 53243113502.

It is not a weakly prime, because it can be changed into another prime (53243113591) 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, 26621556765 + 26621556766.

It is an arithmetic number, because the mean of its divisors is an integer number (26621556766).

Almost surely, 2^53243113531 is an apocalyptic number.

53243113531 is a deficient number, since it is larger than the sum of its proper divisors (1).

53243113531 is an equidigital number, since it uses as much as digits as its factorization.

53243113531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16200, while the sum is 31.

Adding to 53243113531 its reverse (13531134235), we get a palindrome (66774247766).

The spelling of 53243113531 in words is "fifty-three billion, two hundred forty-three million, one hundred thirteen thousand, five hundred thirty-one".