203431643120 has 40 divisors (see below), whose sum is σ = 473048294400. Its totient is φ = 81360661760.

The previous prime is 203431643119. The next prime is 203431643141. The reversal of 203431643120 is 21346134302.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368906 + ... + 736854.

It is an arithmetic number, because the mean of its divisors is an integer number (11826207360).

Almost surely, 2^203431643120 is an apocalyptic number.

203431643120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

203431643120 is an abundant number, since it is smaller than the sum of its proper divisors (269616651280).

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

203431643120 is a wasteful number, since it uses less digits than its factorization.

203431643120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374873 (or 374867 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 203431643120 its reverse (21346134302), we get a palindrome (224777777422).

The spelling of 203431643120 in words is "two hundred three billion, four hundred thirty-one million, six hundred forty-three thousand, one hundred twenty".