13971316 has 6 divisors (see below), whose sum is σ = 24449810. Its totient is φ = 6985656.

The previous prime is 13971313. The next prime is 13971317. The reversal of 13971316 is 61317931.

It can be written as a sum of positive squares in only one way, i.e., 13616100 + 355216 = 3690^2 + 596^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13971313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1746411 + ... + 1746418.

Almost surely, 2^13971316 is an apocalyptic number.

It is an amenable number.

13971316 is a deficient number, since it is larger than the sum of its proper divisors (10478494).

13971316 is a wasteful number, since it uses less digits than its factorization.

13971316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492833 (or 3492831 counting only the distinct ones).

The product of its digits is 3402, while the sum is 31.

The square root of 13971316 is about 3737.8223606801. The cubic root of 13971316 is about 240.8495126348.

The spelling of 13971316 in words is "thirteen million, nine hundred seventy-one thousand, three hundred sixteen".