13503013 has 2 divisors, whose sum is σ = 13503014. Its totient is φ = 13503012.

The previous prime is 13502999. The next prime is 13503041. The reversal of 13503013 is 31030531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7656289 + 5846724 = 2767^2 + 2418^2 .

It is a cyclic number.

It is not a de Polignac number, because 13503013 - 2⁹ = 13502501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13503313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6751506 + 6751507.

It is an arithmetic number, because the mean of its divisors is an integer number (6751507).

Almost surely, 2^13503013 is an apocalyptic number.

It is an amenable number.

13503013 is a deficient number, since it is larger than the sum of its proper divisors (1).

13503013 is an equidigital number, since it uses as much as digits as its factorization.

13503013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135, while the sum is 16.

The square root of 13503013 is about 3674.6446086663. The cubic root of 13503013 is about 238.1278706974.

Adding to 13503013 its reverse (31030531), we get a palindrome (44533544).

The spelling of 13503013 in words is "thirteen million, five hundred three thousand, thirteen".