19871203 has 12 divisors (see below), whose sum is σ = 22216248. Its totient is φ = 17626560.

The previous prime is 19871197. The next prime is 19871213. The reversal of 19871203 is 30217891.

It is not a de Polignac number, because 19871203 - 2⁵ = 19871171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19871213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19851 + ... + 20827.

It is an arithmetic number, because the mean of its divisors is an integer number (1851354).

Almost surely, 2^19871203 is an apocalyptic number.

19871203 is a deficient number, since it is larger than the sum of its proper divisors (2345045).

19871203 is an equidigital number, since it uses as much as digits as its factorization.

With its predecessor (19871202) it forms a Ruth-Aaron pair, since the sum of their prime factors is the same (1074).

19871203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1074 (or 1031 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 19871203 is about 4457.7127543169. The cubic root of 19871203 is about 270.8578249620.

The spelling of 19871203 in words is "nineteen million, eight hundred seventy-one thousand, two hundred three".