1321017 has 4 divisors (see below), whose sum is σ = 1761360. Its totient is φ = 880676.

The previous prime is 1321007. The next prime is 1321031. The reversal of 1321017 is 7101231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1321017 - 2⁷ = 1320889 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1320987 and 1321005.

It is not an unprimeable number, because it can be changed into a prime (1321007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220167 + ... + 220172.

It is an arithmetic number, because the mean of its divisors is an integer number (440340).

2^1321017 is an apocalyptic number.

It is an amenable number.

1321017 is a deficient number, since it is larger than the sum of its proper divisors (440343).

1321017 is an equidigital number, since it uses as much as digits as its factorization.

1321017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440342.

The product of its (nonzero) digits is 42, while the sum is 15.

The square root of 1321017 is about 1149.3550365314. The cubic root of 1321017 is about 109.7242957776.

Adding to 1321017 its reverse (7101231), we get a palindrome (8422248).

The spelling of 1321017 in words is "one million, three hundred twenty-one thousand, seventeen".