13193971 has 4 divisors (see below), whose sum is σ = 15078832. Its totient is φ = 11309112.

The previous prime is 13193959. The next prime is 13193977. The reversal of 13193971 is 17939131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13193971 - 2⁹ = 13193459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13193977) 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 3 ways as a sum of consecutive naturals, for example, 942420 + ... + 942433.

It is an arithmetic number, because the mean of its divisors is an integer number (3769708).

Almost surely, 2^13193971 is an apocalyptic number.

13193971 is a deficient number, since it is larger than the sum of its proper divisors (1884861).

13193971 is an equidigital number, since it uses as much as digits as its factorization.

13193971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1884860.

The product of its digits is 5103, while the sum is 34.

The square root of 13193971 is about 3632.3506163365. The cubic root of 13193971 is about 236.2971634888.

The spelling of 13193971 in words is "thirteen million, one hundred ninety-three thousand, nine hundred seventy-one".