102503123 has 2 divisors, whose sum is σ = 102503124. Its totient is φ = 102503122.

The previous prime is 102503117. The next prime is 102503131. The reversal of 102503123 is 321305201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102503123 - 2⁶ = 102503059 is a prime.

It is not a weakly prime, because it can be changed into another prime (102503153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51251561 + 51251562.

It is an arithmetic number, because the mean of its divisors is an integer number (51251562).

Almost surely, 2^102503123 is an apocalyptic number.

102503123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102503123 is an equidigital number, since it uses as much as digits as its factorization.

102503123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 102503123 is about 10124.3825984600. The cubic root of 102503123 is about 467.9998341125. Note that the first 3 decimals are identical.

Adding to 102503123 its reverse (321305201), we get a palindrome (423808324).

The spelling of 102503123 in words is "one hundred two million, five hundred three thousand, one hundred twenty-three".