203120003023 has 16 divisors (see below), whose sum is σ = 235681864704. Its totient is φ = 171450054720.

The previous prime is 203120002999. The next prime is 203120003027. The reversal of 203120003023 is 320300021302.

It is not a de Polignac number, because 203120003023 - 2²¹ = 203117905871 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203120002988 and 203120003006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203120003027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 187486 + ... + 664372.

It is an arithmetic number, because the mean of its divisors is an integer number (14730116544).

Almost surely, 2^203120003023 is an apocalyptic number.

203120003023 is a deficient number, since it is larger than the sum of its proper divisors (32561861681).

203120003023 is an equidigital number, since it uses as much as digits as its factorization.

203120003023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477822.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 203120003023 its reverse (320300021302), we get a palindrome (523420024325).

The spelling of 203120003023 in words is "two hundred three billion, one hundred twenty million, three thousand, twenty-three".