13040971 has 4 divisors (see below), whose sum is σ = 13175512. Its totient is φ = 12906432.

The previous prime is 13040959. The next prime is 13041001. The reversal of 13040971 is 17904031.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17904031 = 193 ⋅92767.

It is not a de Polignac number, because 13040971 - 2⁷ = 13040843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13040171) 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, 67125 + ... + 67318.

It is an arithmetic number, because the mean of its divisors is an integer number (3293878).

Almost surely, 2^13040971 is an apocalyptic number.

13040971 is a deficient number, since it is larger than the sum of its proper divisors (134541).

13040971 is an equidigital number, since it uses as much as digits as its factorization.

13040971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134540.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 13040971 is about 3611.2284613411. The cubic root of 13040971 is about 235.3802264774.

The spelling of 13040971 in words is "thirteen million, forty thousand, nine hundred seventy-one".