203123031132223 has 4 divisors (see below), whose sum is σ = 204605680994640. Its totient is φ = 201640381269808.

The previous prime is 203123031132181. The next prime is 203123031132247. The reversal of 203123031132223 is 322231130321302.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203123031132223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203123031132191 and 203123031132200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123031130223) 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, 741324931003 + ... + 741324931276.

It is an arithmetic number, because the mean of its divisors is an integer number (51151420248660).

Almost surely, 2^{203123031132223} is an apocalyptic number.

203123031132223 is a deficient number, since it is larger than the sum of its proper divisors (1482649862417).

203123031132223 is a wasteful number, since it uses less digits than its factorization.

203123031132223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482649862416.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 203123031132223 its reverse (322231130321302), we get a palindrome (525354161453525).

The spelling of 203123031132223 in words is "two hundred three trillion, one hundred twenty-three billion, thirty-one million, one hundred thirty-two thousand, two hundred twenty-three".