203113311100 has 36 divisors (see below), whose sum is σ = 503721013264. Its totient is φ = 69638849280.

The previous prime is 203113311067. The next prime is 203113311103. The reversal of 203113311100 is 1113311302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203113311103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145080237 + ... + 145081636.

Almost surely, 2^203113311100 is an apocalyptic number.

203113311100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203113311100 is an abundant number, since it is smaller than the sum of its proper divisors (300607702164).

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

203113311100 is a wasteful number, since it uses less digits than its factorization.

203113311100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290161894 (or 290161887 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 203113311100 its reverse (1113311302), we get a palindrome (204226622402).

The spelling of 203113311100 in words is "two hundred three billion, one hundred thirteen million, three hundred eleven thousand, one hundred".