13159971 has 12 divisors (see below), whose sum is σ = 20737080. Its totient is φ = 7975680.

The previous prime is 13159969. The next prime is 13159981. The reversal of 13159971 is 17995131.

It is not a de Polignac number, because 13159971 - 2¹ = 13159969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13159931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66366 + ... + 66563.

It is an arithmetic number, because the mean of its divisors is an integer number (1728090).

Almost surely, 2^13159971 is an apocalyptic number.

13159971 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13159971 is a deficient number, since it is larger than the sum of its proper divisors (7577109).

13159971 is a wasteful number, since it uses less digits than its factorization.

13159971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132946 (or 132943 counting only the distinct ones).

The product of its digits is 8505, while the sum is 36.

The square root of 13159971 is about 3627.6674323868. The cubic root of 13159971 is about 236.0940147785.

The spelling of 13159971 in words is "thirteen million, one hundred fifty-nine thousand, nine hundred seventy-one".