203113312320 has 56 divisors (see below), whose sum is σ = 644884769664. Its totient is φ = 54163549696.

The previous prime is 203113312301. The next prime is 203113312321. The reversal of 203113312320 is 23213311302.

It is not an unprimeable number, because it can be changed into a prime (203113312321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105787224 + ... + 105789143.

Almost surely, 2^203113312320 is an apocalyptic number.

203113312320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203113312320 is an abundant number, since it is smaller than the sum of its proper divisors (441771457344).

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

203113312320 is a wasteful number, since it uses less digits than its factorization.

203113312320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211576387 (or 211576377 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 203113312320 its reverse (23213311302), we get a palindrome (226326623622).

The spelling of 203113312320 in words is "two hundred three billion, one hundred thirteen million, three hundred twelve thousand, three hundred twenty".