13771871 has 4 divisors (see below), whose sum is σ = 14370672. Its totient is φ = 13173072.

The previous prime is 13771847. The next prime is 13771907. The reversal of 13771871 is 17817731.

13771871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17817731 = 167 ⋅106693.

It is a cyclic number.

It is not a de Polignac number, because 13771871 - 2²² = 9577567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13771801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299366 + ... + 299411.

It is an arithmetic number, because the mean of its divisors is an integer number (3592668).

Almost surely, 2^13771871 is an apocalyptic number.

13771871 is a deficient number, since it is larger than the sum of its proper divisors (598801).

13771871 is an equidigital number, since it uses as much as digits as its factorization.

13771871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598800.

The product of its digits is 8232, while the sum is 35.

The square root of 13771871 is about 3711.0471568009. The cubic root of 13771871 is about 239.6979475571.

The spelling of 13771871 in words is "thirteen million, seven hundred seventy-one thousand, eight hundred seventy-one".