13138207 has 4 divisors (see below), whose sum is σ = 13146840. Its totient is φ = 13129576.

The previous prime is 13138201. The next prime is 13138211. The reversal of 13138207 is 70283131.

13138207 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 13138207 - 2³ = 13138199 is a prime.

It is a super-2 number, since 2×13138207² = 345224966349698, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13138201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357 + ... + 5302.

It is an arithmetic number, because the mean of its divisors is an integer number (3286710).

Almost surely, 2^13138207 is an apocalyptic number.

13138207 is a deficient number, since it is larger than the sum of its proper divisors (8633).

13138207 is an equidigital number, since it uses as much as digits as its factorization.

13138207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8632.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 13138207 is about 3624.6664674146. Note that the first 3 decimals coincide. The cubic root of 13138207 is about 235.9637919650.

The spelling of 13138207 in words is "thirteen million, one hundred thirty-eight thousand, two hundred seven".