203042320123 has 2 divisors, whose sum is σ = 203042320124. Its totient is φ = 203042320122.

The previous prime is 203042320073. The next prime is 203042320127. The reversal of 203042320123 is 321023240302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203042320123 - 2⁹ = 203042319611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203042320094 and 203042320103.

It is not a weakly prime, because it can be changed into another prime (203042320127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101521160061 + 101521160062.

It is an arithmetic number, because the mean of its divisors is an integer number (101521160062).

Almost surely, 2^203042320123 is an apocalyptic number.

203042320123 is a deficient number, since it is larger than the sum of its proper divisors (1).

203042320123 is an equidigital number, since it uses as much as digits as its factorization.

203042320123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 203042320123 its reverse (321023240302), we get a palindrome (524065560425).

The spelling of 203042320123 in words is "two hundred three billion, forty-two million, three hundred twenty thousand, one hundred twenty-three".