1316021 has 8 divisors (see below), whose sum is σ = 1592640. Its totient is φ = 1061568.

The previous prime is 1316017. The next prime is 1316033. The reversal of 1316021 is 1206131.

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

It is a cyclic number.

It is not a de Polignac number, because 1316021 - 2² = 1316017 is a prime.

It is a super-2 number, since 2×1316021² = 3463822544882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1315987 and 1316005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316041) 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, 5411 + ... + 5648.

It is an arithmetic number, because the mean of its divisors is an integer number (199080).

2^1316021 is an apocalyptic number.

It is an amenable number.

1316021 is a deficient number, since it is larger than the sum of its proper divisors (276619).

1316021 is a wasteful number, since it uses less digits than its factorization.

1316021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11083.

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1316021 is about 1147.1795848951. The cubic root of 1316021 is about 109.5857976606.

The spelling of 1316021 in words is "one million, three hundred sixteen thousand, twenty-one".