203031223 has 2 divisors, whose sum is σ = 203031224. Its totient is φ = 203031222.

The previous prime is 203031203. The next prime is 203031259. The reversal of 203031223 is 322130302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 203031223 - 2¹³ = 203023031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203031197 and 203031206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (203031203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101515611 + 101515612.

It is an arithmetic number, because the mean of its divisors is an integer number (101515612).

Almost surely, 2^203031223 is an apocalyptic number.

203031223 is a deficient number, since it is larger than the sum of its proper divisors (1).

203031223 is an equidigital number, since it uses as much as digits as its factorization.

203031223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 203031223 is about 14248.9025191416. The cubic root of 203031223 is about 587.7431960103.

Adding to 203031223 its reverse (322130302), we get a palindrome (525161525).

The spelling of 203031223 in words is "two hundred three million, thirty-one thousand, two hundred twenty-three".