1316289 has 8 divisors (see below), whose sum is σ = 1890112. Its totient is φ = 810000.

The previous prime is 1316279. The next prime is 1316299. The reversal of 1316289 is 9826131.

It is an interprime number because it is at equal distance from previous prime (1316279) and next prime (1316299).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1316289 - 2⁵ = 1316257 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1316209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16837 + ... + 16914.

It is an arithmetic number, because the mean of its divisors is an integer number (236264).

2^1316289 is an apocalyptic number.

It is an amenable number.

1316289 is a deficient number, since it is larger than the sum of its proper divisors (573823).

1316289 is a wasteful number, since it uses less digits than its factorization.

1316289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33767.

The product of its digits is 2592, while the sum is 30.

The square root of 1316289 is about 1147.2963871642. The cubic root of 1316289 is about 109.5932359919.

The spelling of 1316289 in words is "one million, three hundred sixteen thousand, two hundred eighty-nine".