203113122400 has 36 divisors (see below), whose sum is σ = 495849912012. Its totient is φ = 81245248640.

The previous prime is 203113122371. The next prime is 203113122449. The reversal of 203113122400 is 4221311302.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 126944902 + ... + 126946501.

It is an arithmetic number, because the mean of its divisors is an integer number (13773608667).

Almost surely, 2^203113122400 is an apocalyptic number.

203113122400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203113122400 is an abundant number, since it is smaller than the sum of its proper divisors (292736789612).

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

203113122400 is a wasteful number, since it uses less digits than its factorization.

203113122400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253891423 (or 253891410 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 203113122400 its reverse (4221311302), we get a palindrome (207334433702).

The spelling of 203113122400 in words is "two hundred three billion, one hundred thirteen million, one hundred twenty-two thousand, four hundred".