203442261123 has 16 divisors (see below), whose sum is σ = 283242663936. Its totient is φ = 129643039680.

The previous prime is 203442261083. The next prime is 203442261131. The reversal of 203442261123 is 321162244302.

203442261123 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 203442261123 - 2²⁰ = 203441212547 is a prime.

It is a super-2 number, since 2×203442261123² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (203442265123) 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, 900690 + ... + 1103687.

It is an arithmetic number, because the mean of its divisors is an integer number (17702666496).

Almost surely, 2^203442261123 is an apocalyptic number.

203442261123 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

203442261123 is a deficient number, since it is larger than the sum of its proper divisors (79800402813).

203442261123 is a wasteful number, since it uses less digits than its factorization.

203442261123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005874.

The product of its (nonzero) digits is 13824, while the sum is 30.

The spelling of 203442261123 in words is "two hundred three billion, four hundred forty-two million, two hundred sixty-one thousand, one hundred twenty-three".