1316217 has 16 divisors (see below), whose sum is σ = 2021760. Its totient is φ = 746112.

The previous prime is 1316213. The next prime is 1316239. The reversal of 1316217 is 7126131.

It is not a de Polignac number, because 1316217 - 2² = 1316213 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

1316217 is a lucky number.

It is a zygodrome in base 6.

It is a junction number, because it is equal to n+sod(n) for n = 1316193 and 1316202.

It is not an unprimeable number, because it can be changed into a prime (1316213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4759 + ... + 5027.

It is an arithmetic number, because the mean of its divisors is an integer number (126360).

2^1316217 is an apocalyptic number.

It is an amenable number.

1316217 is a deficient number, since it is larger than the sum of its proper divisors (705543).

1316217 is a wasteful number, since it uses less digits than its factorization.

1316217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512.

The product of its digits is 252, while the sum is 21.

The square root of 1316217 is about 1147.2650086183. The cubic root of 1316217 is about 109.5912377334.

The spelling of 1316217 in words is "one million, three hundred sixteen thousand, two hundred seventeen".