123306536 has 16 divisors (see below), whose sum is σ = 231335700. Its totient is φ = 61617024.

The previous prime is 123306517. The next prime is 123306539. The reversal of 123306536 is 635603321.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 93122500 + 30184036 = 9650^2 + 5494^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123306499 and 123306508.

It is not an unprimeable number, because it can be changed into a prime (123306539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14756 + ... + 21548.

Almost surely, 2^123306536 is an apocalyptic number.

It is an amenable number.

123306536 is a deficient number, since it is larger than the sum of its proper divisors (108029164).

123306536 is a wasteful number, since it uses less digits than its factorization.

123306536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9068 (or 9064 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 29.

The square root of 123306536 is about 11104.3476170372. The cubic root of 123306536 is about 497.7317738599.

Adding to 123306536 its reverse (635603321), we get a palindrome (758909857).

The spelling of 123306536 in words is "one hundred twenty-three million, three hundred six thousand, five hundred thirty-six".