203311112321030 has 64 divisors (see below), whose sum is σ = 432665722368000. Its totient is φ = 67302421001088.

The previous prime is 203311112320999. The next prime is 203311112321081. The reversal of 203311112321030 is 30123211113302.

It is a junction number, because it is equal to n+sod(n) for n = 203311112320987 and 203311112321005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 289043501 + ... + 289746039.

It is an arithmetic number, because the mean of its divisors is an integer number (6760401912000).

Almost surely, 2^{203311112321030} is an apocalyptic number.

203311112321030 is an abundant number, since it is smaller than the sum of its proper divisors (229354610046970).

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

203311112321030 is a wasteful number, since it uses less digits than its factorization.

203311112321030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 845141.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 203311112321030 its reverse (30123211113302), we get a palindrome (233434323434332).

The spelling of 203311112321030 in words is "two hundred three trillion, three hundred eleven billion, one hundred twelve million, three hundred twenty-one thousand, thirty".