13144513 has 2 divisors, whose sum is σ = 13144514. Its totient is φ = 13144512.

The previous prime is 13144489. The next prime is 13144531. The reversal of 13144513 is 31544131.

Together with next prime (13144531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13046544 + 97969 = 3612^2 + 313^2 .

It is an emirp because it is prime and its reverse (31544131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13144513 is a prime.

It is not a weakly prime, because it can be changed into another prime (13144543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6572256 + 6572257.

It is an arithmetic number, because the mean of its divisors is an integer number (6572257).

Almost surely, 2^13144513 is an apocalyptic number.

It is an amenable number.

13144513 is a deficient number, since it is larger than the sum of its proper divisors (1).

13144513 is an equidigital number, since it uses as much as digits as its factorization.

13144513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 720, while the sum is 22.

The square root of 13144513 is about 3625.5362362001. The cubic root of 13144513 is about 236.0015381016.

Adding to 13144513 its reverse (31544131), we get a palindrome (44688644).

It can be divided in two parts, 131 and 44513, that added together give a palindrome (44644).

The spelling of 13144513 in words is "thirteen million, one hundred forty-four thousand, five hundred thirteen".