203020111983 has 16 divisors (see below), whose sum is σ = 291641142240. Its totient is φ = 124881846144.

The previous prime is 203020111981. The next prime is 203020112023. The reversal of 203020111983 is 389111020302.

203020111983 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 203020111983 - 2¹ = 203020111981 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203020111983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203020111981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1024668 + ... + 1206641.

It is an arithmetic number, because the mean of its divisors is an integer number (18227571390).

Almost surely, 2^203020111983 is an apocalyptic number.

203020111983 is a deficient number, since it is larger than the sum of its proper divisors (88621030257).

203020111983 is a wasteful number, since it uses less digits than its factorization.

203020111983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2233658.

The product of its (nonzero) digits is 2592, while the sum is 30.

The spelling of 203020111983 in words is "two hundred three billion, twenty million, one hundred eleven thousand, nine hundred eighty-three".