13415971 has 2 divisors, whose sum is σ = 13415972. Its totient is φ = 13415970.

The previous prime is 13415959. The next prime is 13415993. The reversal of 13415971 is 17951431.

13415971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13415971 - 2⁵ = 13415939 is a prime.

It is not a weakly prime, because it can be changed into another prime (13415911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6707985 + 6707986.

It is an arithmetic number, because the mean of its divisors is an integer number (6707986).

Almost surely, 2^13415971 is an apocalyptic number.

13415971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13415971 is an equidigital number, since it uses as much as digits as its factorization.

13415971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3780, while the sum is 31.

The square root of 13415971 is about 3662.7818662869. The cubic root of 13415971 is about 237.6151006266.

The spelling of 13415971 in words is "thirteen million, four hundred fifteen thousand, nine hundred seventy-one".