13718971 has 32 divisors (see below), whose sum is σ = 17510400. Its totient is φ = 10711008.

The previous prime is 13718953. The next prime is 13718981. The reversal of 13718971 is 17981731.

It is not a de Polignac number, because 13718971 - 2⁷ = 13718843 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13718971.

It is not an unprimeable number, because it can be changed into a prime (13718941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 291870 + ... + 291916.

It is an arithmetic number, because the mean of its divisors is an integer number (547200).

Almost surely, 2^13718971 is an apocalyptic number.

13718971 is a deficient number, since it is larger than the sum of its proper divisors (3791429).

13718971 is an equidigital number, since it uses as much as digits as its factorization.

13718971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 114 counting only the distinct ones).

The product of its digits is 10584, while the sum is 37.

The square root of 13718971 is about 3703.9129309421. The cubic root of 13718971 is about 239.3906474693.

The spelling of 13718971 in words is "thirteen million, seven hundred eighteen thousand, nine hundred seventy-one".