13013971 has 8 divisors (see below), whose sum is σ = 13343040. Its totient is φ = 12687168.

The previous prime is 13013969. The next prime is 13013977. The reversal of 13013971 is 17931031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13013971 - 2¹ = 13013969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13013977) 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 7 ways as a sum of consecutive naturals, for example, 18885 + ... + 19561.

It is an arithmetic number, because the mean of its divisors is an integer number (1667880).

Almost surely, 2^13013971 is an apocalyptic number.

13013971 is a deficient number, since it is larger than the sum of its proper divisors (329069).

13013971 is an equidigital number, since it uses as much as digits as its factorization.

13013971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133.

The product of its (nonzero) digits is 567, while the sum is 25.

The square root of 13013971 is about 3607.4881843188. The cubic root of 13013971 is about 235.2176706590.

The spelling of 13013971 in words is "thirteen million, thirteen thousand, nine hundred seventy-one".