13131326503 has 2 divisors, whose sum is σ = 13131326504. Its totient is φ = 13131326502.

The previous prime is 13131326459. The next prime is 13131326539. The reversal of 13131326503 is 30562313131.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13131326503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13131326573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6565663251 + 6565663252.

It is an arithmetic number, because the mean of its divisors is an integer number (6565663252).

Almost surely, 2^13131326503 is an apocalyptic number.

13131326503 is a deficient number, since it is larger than the sum of its proper divisors (1).

13131326503 is an equidigital number, since it uses as much as digits as its factorization.

13131326503 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 28.

Adding to 13131326503 its reverse (30562313131), we get a palindrome (43693639634).

The spelling of 13131326503 in words is "thirteen billion, one hundred thirty-one million, three hundred twenty-six thousand, five hundred three".