13139671 has 4 divisors (see below), whose sum is σ = 13175272. Its totient is φ = 13104072.

The previous prime is 13139653. The next prime is 13139677. The reversal of 13139671 is 17693131.

13139671 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 an emirpimes, since its reverse is a distinct semiprime: 17693131 = 1039 ⋅17029.

It is a cyclic number.

It is not a de Polignac number, because 13139671 - 2⁷ = 13139543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13139677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17241 + ... + 17986.

It is an arithmetic number, because the mean of its divisors is an integer number (3293818).

Almost surely, 2^13139671 is an apocalyptic number.

13139671 is a deficient number, since it is larger than the sum of its proper divisors (35601).

13139671 is an equidigital number, since it uses as much as digits as its factorization.

13139671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35600.

The product of its digits is 3402, while the sum is 31.

The square root of 13139671 is about 3624.8684114048. The cubic root of 13139671 is about 235.9725561787.

The spelling of 13139671 in words is "thirteen million, one hundred thirty-nine thousand, six hundred seventy-one".