203111131122004 has 96 divisors (see below), whose sum is σ = 438800084787456. Its totient is φ = 80277389137920.

The previous prime is 203111131121999. The next prime is 203111131122007. The reversal of 203111131122004 is 400221131111302.

203111131122004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203111131122007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14293599 + ... + 24708889.

It is an arithmetic number, because the mean of its divisors is an integer number (4570834216536).

Almost surely, 2^{203111131122004} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 203111131122004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219400042393728).

203111131122004 is an abundant number, since it is smaller than the sum of its proper divisors (235688953665452).

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

203111131122004 is a wasteful number, since it uses less digits than its factorization.

203111131122004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10416145 (or 10416143 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 203111131122004 its reverse (400221131111302), we get a palindrome (603332262233306).

The spelling of 203111131122004 in words is "two hundred three trillion, one hundred eleven billion, one hundred thirty-one million, one hundred twenty-two thousand, four".