203031013223 has 4 divisors (see below), whose sum is σ = 203124967728. Its totient is φ = 202937058720.

The previous prime is 203031013201. The next prime is 203031013259. The reversal of 203031013223 is 322310130302.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322310130302 = 2 ⋅161155065151.

It is a cyclic number.

It is not a de Polignac number, because 203031013223 - 2⁸ = 203031012967 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203031013195 and 203031013204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203031010223) 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 3 ways as a sum of consecutive naturals, for example, 46974011 + ... + 46978332.

It is an arithmetic number, because the mean of its divisors is an integer number (50781241932).

Almost surely, 2^203031013223 is an apocalyptic number.

203031013223 is a deficient number, since it is larger than the sum of its proper divisors (93954505).

203031013223 is an equidigital number, since it uses as much as digits as its factorization.

203031013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93954504.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 203031013223 its reverse (322310130302), we get a palindrome (525341143525).

The spelling of 203031013223 in words is "two hundred three billion, thirty-one million, thirteen thousand, two hundred twenty-three".