503123 has 2 divisors, whose sum is σ = 503124. Its totient is φ = 503122.

The previous prime is 503077. The next prime is 503131. The reversal of 503123 is 321305.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 503123 - 2¹² = 499027 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 503098 and 503107.

It is not a weakly prime, because it can be changed into another prime (503423) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251561 + 251562.

It is an arithmetic number, because the mean of its divisors is an integer number (251562).

2⁵⁰³¹²³ is an apocalyptic number.

503123 is a deficient number, since it is larger than the sum of its proper divisors (1).

503123 is an equidigital number, since it uses as much as digits as its factorization.

503123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 503123 is about 709.3116381394. The cubic root of 503123 is about 79.5349581895.

Adding to 503123 its reverse (321305), we get a palindrome (824428).

It can be divided in two parts, 503 and 123, that added together give a palindrome (626).

The spelling of 503123 in words is "five hundred three thousand, one hundred twenty-three".