203112123243 has 8 divisors (see below), whose sum is σ = 270831406656. Its totient is φ = 135400461000.

The previous prime is 203112123241. The next prime is 203112123271. The reversal of 203112123243 is 342321211302.

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

It is not a de Polignac number, because 203112123243 - 2¹ = 203112123241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203112123241) 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, 1842813 + ... + 1949918.

It is an arithmetic number, because the mean of its divisors is an integer number (33853925832).

Almost surely, 2^203112123243 is an apocalyptic number.

203112123243 is a deficient number, since it is larger than the sum of its proper divisors (67719283413).

203112123243 is a wasteful number, since it uses less digits than its factorization.

203112123243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3810585.

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 203112123243 its reverse (342321211302), we get a palindrome (545433334545).

The spelling of 203112123243 in words is "two hundred three billion, one hundred twelve million, one hundred twenty-three thousand, two hundred forty-three".