203123312023 has 4 divisors (see below), whose sum is σ = 215071742160. Its totient is φ = 191174881888.

The previous prime is 203123312009. The next prime is 203123312033. The reversal of 203123312023 is 320213321302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 203123312023 - 2³³ = 194533377431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203123311985 and 203123312003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123312003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5974215043 + ... + 5974215076.

It is an arithmetic number, because the mean of its divisors is an integer number (53767935540).

Almost surely, 2^203123312023 is an apocalyptic number.

203123312023 is a deficient number, since it is larger than the sum of its proper divisors (11948430137).

203123312023 is a wasteful number, since it uses less digits than its factorization.

203123312023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948430136.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 203123312023 its reverse (320213321302), we get a palindrome (523336633325).

The spelling of 203123312023 in words is "two hundred three billion, one hundred twenty-three million, three hundred twelve thousand, twenty-three".