123205130533 has 16 divisors (see below), whose sum is σ = 128097002880. Its totient is φ = 118356836416.

The previous prime is 123205130513. The next prime is 123205130551. The reversal of 123205130533 is 335031502321.

It is a cyclic number.

It is not a de Polignac number, because 123205130533 - 2⁹ = 123205130021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123205130513) 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 in 15 ways as a sum of consecutive naturals, for example, 12153735 + ... + 12163867.

It is an arithmetic number, because the mean of its divisors is an integer number (8006062680).

Almost surely, 2^123205130533 is an apocalyptic number.

It is an amenable number.

123205130533 is a deficient number, since it is larger than the sum of its proper divisors (4891872347).

123205130533 is a wasteful number, since it uses less digits than its factorization.

123205130533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12236.

The product of its (nonzero) digits is 8100, while the sum is 28.

Adding to 123205130533 its reverse (335031502321), we get a palindrome (458236632854).

The spelling of 123205130533 in words is "one hundred twenty-three billion, two hundred five million, one hundred thirty thousand, five hundred thirty-three".