13485971 has 2 divisors, whose sum is σ = 13485972. Its totient is φ = 13485970.

The previous prime is 13485949. The next prime is 13485973. The reversal of 13485971 is 17958431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13485971 - 2⁶ = 13485907 is a prime.

Together with 13485973, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13485973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6742985 + 6742986.

It is an arithmetic number, because the mean of its divisors is an integer number (6742986).

Almost surely, 2^13485971 is an apocalyptic number.

13485971 is a deficient number, since it is larger than the sum of its proper divisors (1).

13485971 is an equidigital number, since it uses as much as digits as its factorization.

13485971 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30240, while the sum is 38.

The square root of 13485971 is about 3672.3250128495. The cubic root of 13485971 is about 238.0276490252.

The spelling of 13485971 in words is "thirteen million, four hundred eighty-five thousand, nine hundred seventy-one".