13513109 has 2 divisors, whose sum is σ = 13513110. Its totient is φ = 13513108.

The previous prime is 13513091. The next prime is 13513127. The reversal of 13513109 is 90131531.

13513109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with previous prime (13513091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (13513091) and next prime (13513127).

It can be written as a sum of positive squares in only one way, i.e., 8236900 + 5276209 = 2870^2 + 2297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13513109 is a prime.

It is a super-2 number, since 2×13513109² = 365208229691762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13510109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6756554 + 6756555.

It is an arithmetic number, because the mean of its divisors is an integer number (6756555).

Almost surely, 2^13513109 is an apocalyptic number.

It is an amenable number.

13513109 is a deficient number, since it is larger than the sum of its proper divisors (1).

13513109 is an equidigital number, since it uses as much as digits as its factorization.

13513109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 405, while the sum is 23.

The square root of 13513109 is about 3676.0180902710. The cubic root of 13513109 is about 238.1872041230.

The spelling of 13513109 in words is "thirteen million, five hundred thirteen thousand, one hundred nine".