203911131873 has 8 divisors (see below), whose sum is σ = 271892257888. Its totient is φ = 135935380224.

The previous prime is 203911131863. The next prime is 203911131877. The reversal of 203911131873 is 378131119302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 203911131873 - 2³² = 199616164577 is a prime.

It is a Duffinian 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, 1254211 + ... + 1407432.

It is an arithmetic number, because the mean of its divisors is an integer number (33986532236).

Almost surely, 2^203911131873 is an apocalyptic number.

It is an amenable number.

203911131873 is a deficient number, since it is larger than the sum of its proper divisors (67981126015).

203911131873 is a wasteful number, since it uses less digits than its factorization.

203911131873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2687183.

The product of its (nonzero) digits is 27216, while the sum is 39.

The spelling of 203911131873 in words is "two hundred three billion, nine hundred eleven million, one hundred thirty-one thousand, eight hundred seventy-three".