203123161118200 has 48 divisors (see below), whose sum is σ = 472639461750000. Its totient is φ = 81184212894720.

The previous prime is 203123161118173. The next prime is 203123161118203. The reversal of 203123161118200 is 2811161321302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123161118203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 406321780 + ... + 406821379.

It is an arithmetic number, because the mean of its divisors is an integer number (9846655453125).

Almost surely, 2^{203123161118200} is an apocalyptic number.

203123161118200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203123161118200 is an abundant number, since it is smaller than the sum of its proper divisors (269516300631800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

203123161118200 is a wasteful number, since it uses less digits than its factorization.

203123161118200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813144424 (or 813144415 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 31.

The spelling of 203123161118200 in words is "two hundred three trillion, one hundred twenty-three billion, one hundred sixty-one million, one hundred eighteen thousand, two hundred".