13020503 has 2 divisors, whose sum is σ = 13020504. Its totient is φ = 13020502.

The previous prime is 13020467. The next prime is 13020523. The reversal of 13020503 is 30502031.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13020503 - 2⁶ = 13020439 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13020523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510251 + 6510252.

It is an arithmetic number, because the mean of its divisors is an integer number (6510252).

Almost surely, 2^13020503 is an apocalyptic number.

13020503 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020503 is an equidigital number, since it uses as much as digits as its factorization.

13020503 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 13020503 is about 3608.3934098155. The cubic root of 13020503 is about 235.2570177278.

Adding to 13020503 its reverse (30502031), we get a palindrome (43522534).

The spelling of 13020503 in words is "thirteen million, twenty thousand, five hundred three".