203123030023 has 4 divisors (see below), whose sum is σ = 204339335760. Its totient is φ = 201906724288.

The previous prime is 203123029997. The next prime is 203123030083. The reversal of 203123030023 is 320030321302.

It is a happy number.

203123030023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 320030321302 = 2 ⋅160015160651.

It is a cyclic number.

It is not a de Polignac number, because 203123030023 - 2²⁵ = 203089475591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123030083) 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 3 ways as a sum of consecutive naturals, for example, 608152618 + ... + 608152951.

It is an arithmetic number, because the mean of its divisors is an integer number (51084833940).

Almost surely, 2^203123030023 is an apocalyptic number.

203123030023 is a deficient number, since it is larger than the sum of its proper divisors (1216305737).

203123030023 is a wasteful number, since it uses less digits than its factorization.

203123030023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1216305736.

The product of its (nonzero) digits is 648, while the sum is 19.

Adding to 203123030023 its reverse (320030321302), we get a palindrome (523153351325).

The spelling of 203123030023 in words is "two hundred three billion, one hundred twenty-three million, thirty thousand, twenty-three".