13071239 has 4 divisors (see below), whose sum is σ = 13133400. Its totient is φ = 13009080.

The previous prime is 13071211. The next prime is 13071241. The reversal of 13071239 is 93217031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93217031 = 31 ⋅3007001.

It is a cyclic number.

It is not a de Polignac number, because 13071239 - 2⁸ = 13070983 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 (13071209) 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, 30764 + ... + 31185.

It is an arithmetic number, because the mean of its divisors is an integer number (3283350).

Almost surely, 2^13071239 is an apocalyptic number.

13071239 is a deficient number, since it is larger than the sum of its proper divisors (62161).

13071239 is an equidigital number, since it uses as much as digits as its factorization.

13071239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62160.

The product of its (nonzero) digits is 1134, while the sum is 26.

The square root of 13071239 is about 3615.4168501018. The cubic root of 13071239 is about 235.5621910420.

The spelling of 13071239 in words is "thirteen million, seventy-one thousand, two hundred thirty-nine".