123203163436 has 60 divisors (see below), whose sum is σ = 235295696608. Its totient is φ = 56405327616.

The previous prime is 123203163427. The next prime is 123203163439. The reversal of 123203163436 is 634361302321.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (123203163439) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12356125 + ... + 12366091.

Almost surely, 2^123203163436 is an apocalyptic number.

It is an amenable number.

123203163436 is a deficient number, since it is larger than the sum of its proper divisors (112092533172).

123203163436 is an frugal number, since it uses more digits than its factorization.

123203163436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10076 (or 10023 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 34.

Adding to 123203163436 its reverse (634361302321), we get a palindrome (757564465757).

The spelling of 123203163436 in words is "one hundred twenty-three billion, two hundred three million, one hundred sixty-three thousand, four hundred thirty-six".