203911131872 has 48 divisors (see below), whose sum is σ = 464607682560. Its totient is φ = 86284268928.

The previous prime is 203911131863. The next prime is 203911131877. The reversal of 203911131872 is 278131119302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203911131877) 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, 5743808 + ... + 5779199.

It is an arithmetic number, because the mean of its divisors is an integer number (9679326720).

Almost surely, 2^203911131872 is an apocalyptic number.

It is an amenable number.

203911131872 is an abundant number, since it is smaller than the sum of its proper divisors (260696550688).

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

203911131872 is a wasteful number, since it uses less digits than its factorization.

203911131872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11523103 (or 11523095 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 203911131872 in words is "two hundred three billion, nine hundred eleven million, one hundred thirty-one thousand, eight hundred seventy-two".